diff --git a/archive/2.0.0a3/api/drivers/README.md b/archive/2.0.0a3/api/drivers/README.md
deleted file mode 100644
index f78812f0..00000000
--- a/archive/2.0.0a3/api/drivers/README.md
+++ /dev/null
@@ -1,37 +0,0 @@
----
-contentSidebar: true
-sidebarDepth: 0
----
-
-# NoneBot.drivers 模块
-
-## 后端驱动适配基类
-
-各驱动请继承以下基类
-
-
-## _class_ `BaseDriver`
-
-基类：`abc.ABC`
-
-Driver 基类。将后端框架封装，以满足适配器使用。
-
-
-### `_adapters`
-
-
-* **类型**
-
-    `Dict[str, Type[Bot]]`
-
-
-
-* **说明**
-
-    已注册的适配器列表
-
-
-
-### _abstract_ `__init__(env, config)`
-
-Initialize self.  See help(type(self)) for accurate signature.
diff --git a/archive/2.0.0a3/api/drivers/fastapi.md b/archive/2.0.0a3/api/drivers/fastapi.md
deleted file mode 100644
index 029c9bc8..00000000
--- a/archive/2.0.0a3/api/drivers/fastapi.md
+++ /dev/null
@@ -1,16 +0,0 @@
----
-contentSidebar: true
-sidebarDepth: 0
----
-
-# NoneBot.drivers.fastapi 模块
-
-
-## _class_ `Driver`
-
-基类：[`nonebot.drivers.BaseDriver`](#None)
-
-
-### `__init__(env, config)`
-
-Initialize self.  See help(type(self)) for accurate signature.
diff --git a/archive/2.0.0a3/README.md b/archive/2.0.0a4/README.md
similarity index 100%
rename from archive/2.0.0a3/README.md
rename to archive/2.0.0a4/README.md
diff --git a/archive/2.0.0a3/api/README.md b/archive/2.0.0a4/api/README.md
similarity index 94%
rename from archive/2.0.0a3/api/README.md
rename to archive/2.0.0a4/api/README.md
index 52c6e9f6..dcfb548c 100644
--- a/archive/2.0.0a3/api/README.md
+++ b/archive/2.0.0a4/api/README.md
@@ -10,6 +10,9 @@
     * [nonebot.config](config.html)
 
 
+    * [nonebot.plugin](plugin.html)
+
+
     * [nonebot.matcher](matcher.html)
 
 
diff --git a/archive/2.0.0a3/api/adapters/README.md b/archive/2.0.0a4/api/adapters/README.md
similarity index 100%
rename from archive/2.0.0a3/api/adapters/README.md
rename to archive/2.0.0a4/api/adapters/README.md
diff --git a/archive/2.0.0a3/api/adapters/cqhttp.md b/archive/2.0.0a4/api/adapters/cqhttp.md
similarity index 97%
rename from archive/2.0.0a3/api/adapters/cqhttp.md
rename to archive/2.0.0a4/api/adapters/cqhttp.md
index aae78f86..73b4e044 100644
--- a/archive/2.0.0a3/api/adapters/cqhttp.md
+++ b/archive/2.0.0a4/api/adapters/cqhttp.md
@@ -405,7 +405,11 @@ CQHTTP 协议 Event 适配。继承属性参考 [BaseEvent](./#class-baseevent)
 
 基类：[`nonebot.adapters.BaseMessageSegment`](#None)
 
+CQHTTP 协议 MessageSegment 适配。具体方法参考协议消息段类型或源码。
+
 
 ## _class_ `Message`
 
 基类：[`nonebot.adapters.BaseMessage`](#None)
+
+CQHTTP 协议 Message 适配。
diff --git a/archive/2.0.0a3/api/config.md b/archive/2.0.0a4/api/config.md
similarity index 100%
rename from archive/2.0.0a3/api/config.md
rename to archive/2.0.0a4/api/config.md
diff --git a/archive/2.0.0a4/api/drivers/README.md b/archive/2.0.0a4/api/drivers/README.md
new file mode 100644
index 00000000..624220ba
--- /dev/null
+++ b/archive/2.0.0a4/api/drivers/README.md
@@ -0,0 +1,246 @@
+---
+contentSidebar: true
+sidebarDepth: 0
+---
+
+# NoneBot.drivers 模块
+
+## 后端驱动适配基类
+
+各驱动请继承以下基类
+
+
+## _class_ `BaseDriver`
+
+基类：`abc.ABC`
+
+Driver 基类。将后端框架封装，以满足适配器使用。
+
+
+### `_adapters`
+
+
+* **类型**
+
+    `Dict[str, Type[Bot]]`
+
+
+
+* **说明**
+
+    已注册的适配器列表
+
+
+
+### _abstract_ `__init__(env, config)`
+
+
+* **参数**
+
+    
+    * `env: Env`: 包含环境信息的 Env 对象
+
+
+    * `config: Config`: 包含配置信息的 Config 对象
+
+
+
+### `env`
+
+
+* **类型**
+
+    `str`
+
+
+
+* **说明**
+
+    环境名称
+
+
+
+### `config`
+
+
+* **类型**
+
+    `Config`
+
+
+
+* **说明**
+
+    配置对象
+
+
+
+### `_clients`
+
+
+* **类型**
+
+    `Dict[str, Bot]`
+
+
+
+* **说明**
+
+    已连接的 Bot
+
+
+
+### _classmethod_ `register_adapter(name, adapter)`
+
+
+* **说明**
+
+    注册一个协议适配器
+
+
+
+* **参数**
+
+    
+    * `name: str`: 适配器名称，用于在连接时进行识别
+
+
+    * `adapter: Type[Bot]`: 适配器 Class
+
+
+
+### _abstract property_ `type`
+
+驱动类型名称
+
+
+### _abstract property_ `server_app`
+
+驱动 APP 对象
+
+
+### _abstract property_ `asgi`
+
+驱动 ASGI 对象
+
+
+### _abstract property_ `logger`
+
+驱动专属 logger 日志记录器
+
+
+### _property_ `bots`
+
+
+* **类型**
+
+    `Dict[str, Bot]`
+
+
+
+* **说明**
+
+    获取当前所有已连接的 Bot
+
+
+
+### _abstract_ `on_startup(func)`
+
+注册一个在驱动启动时运行的函数
+
+
+### _abstract_ `on_shutdown(func)`
+
+注册一个在驱动停止时运行的函数
+
+
+### _abstract_ `run(host=None, port=None, *args, **kwargs)`
+
+
+* **说明**
+
+    启动驱动框架
+
+
+
+* **参数**
+
+    
+    * `host: Optional[str]`: 驱动绑定 IP
+
+
+    * `post: Optional[int]`: 驱动绑定端口
+
+
+    * `*args`
+
+
+    * `**kwargs`
+
+
+
+### _abstract async_ `_handle_http()`
+
+用于处理 HTTP 类型请求的函数
+
+
+### _abstract async_ `_handle_ws_reverse()`
+
+用于处理 WebSocket 类型请求的函数
+
+
+## _class_ `BaseWebSocket`
+
+基类：`object`
+
+WebSocket 连接封装，统一接口方便外部调用。
+
+
+### _abstract_ `__init__(websocket)`
+
+
+* **参数**
+
+    
+    * `websocket: Any`: WebSocket 连接对象
+
+
+
+### _property_ `websocket`
+
+WebSocket 连接对象
+
+
+### _abstract property_ `closed`
+
+
+* **类型**
+
+    `bool`
+
+
+
+* **说明**
+
+    连接是否已经关闭
+
+
+
+### _abstract async_ `accept()`
+
+接受 WebSocket 连接请求
+
+
+### _abstract async_ `close(code)`
+
+关闭 WebSocket 连接请求
+
+
+### _abstract async_ `receive()`
+
+接收一条 WebSocket 信息
+
+
+### _abstract async_ `send(data)`
+
+发送一条 WebSocket 信息
diff --git a/archive/2.0.0a4/api/drivers/fastapi.md b/archive/2.0.0a4/api/drivers/fastapi.md
new file mode 100644
index 00000000..523b09b2
--- /dev/null
+++ b/archive/2.0.0a4/api/drivers/fastapi.md
@@ -0,0 +1,125 @@
+---
+contentSidebar: true
+sidebarDepth: 0
+---
+
+# NoneBot.drivers.fastapi 模块
+
+## FastAPI 驱动适配
+
+后端使用方法请参考: [FastAPI 文档](https://fastapi.tiangolo.com/)
+
+
+## _class_ `Driver`
+
+基类：[`nonebot.drivers.BaseDriver`](#None)
+
+FastAPI 驱动框架
+
+
+### `__init__(env, config)`
+
+
+* **参数**
+
+
+
+* `env: Env`: 包含环境信息的 Env 对象
+
+
+* `config: Config`: 包含配置信息的 Config 对象
+
+
+### _property_ `type`
+
+驱动名称: `fastapi`
+
+
+### _property_ `server_app`
+
+`FastAPI APP` 对象
+
+
+### _property_ `asgi`
+
+`FastAPI APP` 对象
+
+
+### _property_ `logger`
+
+fastapi 使用的 logger
+
+
+### `on_startup(func)`
+
+参考文档: [Events](https://fastapi.tiangolo.com/advanced/events/#startup-event)
+
+
+### `on_shutdown(func)`
+
+参考文档: [Events](https://fastapi.tiangolo.com/advanced/events/#startup-event)
+
+
+### `run(host=None, port=None, *, app=None, **kwargs)`
+
+使用 `uvicorn` 启动 FastAPI
+
+
+### _async_ `_handle_http(adapter, data=Body(Ellipsis), x_self_id=Header(None), x_signature=Header(None), auth=Depends(get_auth_bearer))`
+
+用于处理 HTTP 类型请求的函数
+
+
+### _async_ `_handle_ws_reverse(adapter, websocket, x_self_id=Header(None), auth=Depends(get_auth_bearer))`
+
+用于处理 WebSocket 类型请求的函数
+
+
+## _class_ `WebSocket`
+
+基类：[`nonebot.drivers.BaseWebSocket`](#None)
+
+
+### `__init__(websocket)`
+
+
+* **参数**
+
+
+
+* `websocket: Any`: WebSocket 连接对象
+
+
+### _property_ `closed`
+
+
+* **类型**
+
+    `bool`
+
+
+
+* **说明**
+
+    连接是否已经关闭
+
+
+
+### _async_ `accept()`
+
+接受 WebSocket 连接请求
+
+
+### _async_ `close(code=1000)`
+
+关闭 WebSocket 连接请求
+
+
+### _async_ `receive()`
+
+接收一条 WebSocket 信息
+
+
+### _async_ `send(data)`
+
+发送一条 WebSocket 信息
diff --git a/archive/2.0.0a3/api/exception.md b/archive/2.0.0a4/api/exception.md
similarity index 100%
rename from archive/2.0.0a3/api/exception.md
rename to archive/2.0.0a4/api/exception.md
diff --git a/archive/2.0.0a3/api/log.md b/archive/2.0.0a4/api/log.md
similarity index 100%
rename from archive/2.0.0a3/api/log.md
rename to archive/2.0.0a4/api/log.md
diff --git a/archive/2.0.0a3/api/matcher.md b/archive/2.0.0a4/api/matcher.md
similarity index 90%
rename from archive/2.0.0a3/api/matcher.md
rename to archive/2.0.0a4/api/matcher.md
index c1176030..b061cd64 100644
--- a/archive/2.0.0a3/api/matcher.md
+++ b/archive/2.0.0a4/api/matcher.md
@@ -377,7 +377,7 @@ sidebarDepth: 0
 
 
 
-### _async classmethod_ `send(message)`
+### _async classmethod_ `send(message, **kwargs)`
 
 
 * **说明**
@@ -392,8 +392,11 @@ sidebarDepth: 0
     * `message: Union[str, Message, MessageSegment]`: 消息内容
 
 
+    * `**kwargs`: 其他传递给 `bot.send` 的参数，请参考对应 adapter 的 bot 对象 api
 
-### _async classmethod_ `finish(message=None)`
+
+
+### _async classmethod_ `finish(message=None, **kwargs)`
 
 
 * **说明**
@@ -408,8 +411,11 @@ sidebarDepth: 0
     * `message: Union[str, Message, MessageSegment]`: 消息内容
 
 
+    * `**kwargs`: 其他传递给 `bot.send` 的参数，请参考对应 adapter 的 bot 对象 api
 
-### _async classmethod_ `pause(prompt=None)`
+
+
+### _async classmethod_ `pause(prompt=None, **kwargs)`
 
 
 * **说明**
@@ -424,8 +430,11 @@ sidebarDepth: 0
     * `prompt: Union[str, Message, MessageSegment]`: 消息内容
 
 
+    * `**kwargs`: 其他传递给 `bot.send` 的参数，请参考对应 adapter 的 bot 对象 api
 
-### _async classmethod_ `reject(prompt=None)`
+
+
+### _async classmethod_ `reject(prompt=None, **kwargs)`
 
 
 * **说明**
@@ -440,6 +449,9 @@ sidebarDepth: 0
     * `prompt: Union[str, Message, MessageSegment]`: 消息内容
 
 
+    * `**kwargs`: 其他传递给 `bot.send` 的参数，请参考对应 adapter 的 bot 对象 api
+
+
 
 ## _class_ `MatcherGroup`
 
diff --git a/archive/2.0.0a3/api/nonebot.md b/archive/2.0.0a4/api/nonebot.md
similarity index 100%
rename from archive/2.0.0a3/api/nonebot.md
rename to archive/2.0.0a4/api/nonebot.md
diff --git a/archive/2.0.0a3/api/permission.md b/archive/2.0.0a4/api/permission.md
similarity index 100%
rename from archive/2.0.0a3/api/permission.md
rename to archive/2.0.0a4/api/permission.md
diff --git a/archive/2.0.0a4/api/plugin.md b/archive/2.0.0a4/api/plugin.md
new file mode 100644
index 00000000..42cdf84f
--- /dev/null
+++ b/archive/2.0.0a4/api/plugin.md
@@ -0,0 +1,629 @@
+---
+contentSidebar: true
+sidebarDepth: 0
+---
+
+# NoneBot.plugin 模块
+
+## 插件
+
+为 NoneBot 插件开发提供便携的定义函数。
+
+
+## `plugins`
+
+
+* **类型**
+
+    `Dict[str, Plugin]`
+
+
+
+* **说明**
+
+    已加载的插件
+
+
+
+## _class_ `Plugin`
+
+基类：`object`
+
+存储插件信息
+
+
+### `name`
+
+
+* **类型**: `str`
+
+
+* **说明**: 插件名称，使用 文件/文件夹 名称作为插件名
+
+
+### `module`
+
+
+* **类型**: `ModuleType`
+
+
+* **说明**: 插件模块对象
+
+
+### `matcher`
+
+
+* **类型**: `Set[Type[Matcher]]`
+
+
+* **说明**: 插件内定义的 `Matcher`
+
+
+## `on(type='', rule=None, permission=None, *, handlers=None, temp=False, priority=1, block=False, state=None)`
+
+
+* **说明**
+
+    注册一个基础事件响应器，可自定义类型。
+
+
+
+* **参数**
+
+    
+    * `type: str`: 事件响应器类型
+
+
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `permission: Optional[Permission]`: 事件响应权限
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_metaevent(rule=None, *, handlers=None, temp=False, priority=1, block=False, state=None)`
+
+
+* **说明**
+
+    注册一个元事件响应器。
+
+
+
+* **参数**
+
+    
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_message(rule=None, permission=None, *, handlers=None, temp=False, priority=1, block=True, state=None)`
+
+
+* **说明**
+
+    注册一个消息事件响应器。
+
+
+
+* **参数**
+
+    
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `permission: Optional[Permission]`: 事件响应权限
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_notice(rule=None, *, handlers=None, temp=False, priority=1, block=False, state=None)`
+
+
+* **说明**
+
+    注册一个通知事件响应器。
+
+
+
+* **参数**
+
+    
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_request(rule=None, *, handlers=None, temp=False, priority=1, block=False, state=None)`
+
+
+* **说明**
+
+    注册一个请求事件响应器。
+
+
+
+* **参数**
+
+    
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_startswith(msg, rule=None, **kwargs)`
+
+
+* **说明**
+
+    注册一个消息事件响应器，并且当消息的\*\*文本部分\*\*以指定内容开头时响应。
+
+
+
+* **参数**
+
+    
+    * `msg: str`: 指定消息开头内容
+
+
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `permission: Optional[Permission]`: 事件响应权限
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_endswith(msg, rule=None, **kwargs)`
+
+
+* **说明**
+
+    注册一个消息事件响应器，并且当消息的\*\*文本部分\*\*以指定内容结尾时响应。
+
+
+
+* **参数**
+
+    
+    * `msg: str`: 指定消息结尾内容
+
+
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `permission: Optional[Permission]`: 事件响应权限
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_keyword(keywords, rule=None, **kwargs)`
+
+
+* **说明**
+
+    注册一个消息事件响应器，并且当消息纯文本部分包含关键词时响应。
+
+
+
+* **参数**
+
+    
+    * `keywords: Set[str]`: 关键词列表
+
+
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `permission: Optional[Permission]`: 事件响应权限
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_command(cmd, rule=None, aliases=None, **kwargs)`
+
+
+* **说明**
+
+    注册一个消息事件响应器，并且当消息以指定命令开头时响应。
+
+    命令匹配规则参考: [命令形式匹配](rule.html#command-command)
+
+
+
+* **参数**
+
+    
+    * `cmd: Union[str, Tuple[str, ...]]`: 指定命令内容
+
+
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `aliases: Optional[Set[Union[str, Tuple[str, ...]]]]`: 命令别名
+
+
+    * `permission: Optional[Permission]`: 事件响应权限
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `on_regex(pattern, flags=0, rule=None, **kwargs)`
+
+
+* **说明**
+
+    注册一个消息事件响应器，并且当消息匹配正则表达式时响应。
+
+    命令匹配规则参考: [正则匹配](rule.html#regex-regex-flags-0)
+
+
+
+* **参数**
+
+    
+    * `pattern: str`: 正则表达式
+
+
+    * `flags: Union[int, re.RegexFlag]`: 正则匹配标志
+
+
+    * `rule: Optional[Union[Rule, RuleChecker]]`: 事件响应规则
+
+
+    * `permission: Optional[Permission]`: 事件响应权限
+
+
+    * `handlers: Optional[List[Handler]]`: 事件处理函数列表
+
+
+    * `temp: bool`: 是否为临时事件响应器（仅执行一次）
+
+
+    * `priority: int`: 事件响应器优先级
+
+
+    * `block: bool`: 是否阻止事件向更低优先级传递
+
+
+    * `state: Optional[dict]`: 默认的 state
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## _class_ `CommandGroup`
+
+基类：`object`
+
+命令组，用于声明一组有相同名称前缀的命令。
+
+
+### `__init__(cmd, **kwargs)`
+
+
+* **参数**
+
+    
+    * `cmd: Union[str, Tuple[str, ...]]`: 命令前缀
+
+
+    * `**kwargs`: 其他传递给 `on_command` 的参数默认值，参考 [on_command](#on-command-cmd-rule-none-aliases-none-kwargs)
+
+
+
+### `basecmd`
+
+
+* **类型**: `Tuple[str, ...]`
+
+
+* **说明**: 命令前缀
+
+
+### `base_kwargs`
+
+
+* **类型**: `Dict[str, Any]`
+
+
+* **说明**: 其他传递给 `on_command` 的参数默认值
+
+
+### `command(cmd, **kwargs)`
+
+
+* **说明**
+
+    注册一个新的命令。
+
+
+
+* **参数**
+
+    
+    * `cmd: Union[str, Tuple[str, ...]]`: 命令前缀
+
+
+    * `**kwargs`: 其他传递给 `on_command` 的参数，将会覆盖命令组默认值
+
+
+
+* **返回**
+
+    
+    * `Type[Matcher]`
+
+
+
+## `load_plugin(module_path)`
+
+
+* **说明**
+
+    使用 `importlib` 加载单个插件，可以是本地插件或是通过 `pip` 安装的插件。
+
+
+
+* **参数**
+
+    
+    * `module_path: str`: 插件名称 `path.to.your.plugin`
+
+
+
+* **返回**
+
+    
+    * `Optional[Plugin]`
+
+
+
+## `load_plugins(*plugin_dir)`
+
+
+* **说明**
+
+    导入目录下多个插件，以 `_` 开头的插件不会被导入！
+
+
+
+* **参数**
+
+    
+    * `*plugin_dir: str`: 插件路径
+
+
+
+* **返回**
+
+    
+    * `Set[Plugin]`
+
+
+
+## `load_builtin_plugins()`
+
+
+* **说明**
+
+    导入 NoneBot 内置插件
+
+
+
+* **返回**
+
+    
+    * `Plugin`
+
+
+
+## `get_loaded_plugins()`
+
+
+* **说明**
+
+    获取当前已导入的插件。
+
+
+
+* **返回**
+
+    
+    * `Set[Plugin]`
diff --git a/archive/2.0.0a3/api/rule.md b/archive/2.0.0a4/api/rule.md
similarity index 79%
rename from archive/2.0.0a3/api/rule.md
rename to archive/2.0.0a4/api/rule.md
index 2054d04b..dade2a5b 100644
--- a/archive/2.0.0a3/api/rule.md
+++ b/archive/2.0.0a4/api/rule.md
@@ -123,7 +123,7 @@ Rule(async_function, run_sync(sync_function))
 
 
 
-## `keyword(msg)`
+## `keyword(*keywords)`
 
 
 * **说明**
@@ -135,23 +135,25 @@ Rule(async_function, run_sync(sync_function))
 * **参数**
 
     
-    * `msg: str`: 关键词
+    * `*keywords: str`: 关键词
 
 
 
-## `command(command)`
+## `command(*cmds)`
 
 
 * **说明**
 
     命令形式匹配，根据配置里提供的 `command_start`, `command_sep` 判断消息是否为命令。
 
+    可以通过 `state["_prefix"]["command"]` 获取匹配成功的命令（例：`("test",)`），通过 `state["_prefix"]["raw_command"]` 获取匹配成功的原始命令文本（例：`"/test"`）。
+
 
 
 * **参数**
 
     
-    * `command: Tuples[str, ...]`: 命令内容
+    * `*cmds: Union[str, Tuple[str, ...]]`: 命令内容
 
 
 
@@ -173,7 +175,9 @@ Rule(async_function, run_sync(sync_function))
 
 * **说明**
 
-    根据正则表达式进行匹配
+    根据正则表达式进行匹配。
+
+    可以通过 `state["_matched"]` 获取正则表达式匹配成功的文本。
 
 
 
@@ -186,6 +190,10 @@ Rule(async_function, run_sync(sync_function))
     * `flags: Union[int, re.RegexFlag]`: 正则标志
 
 
+:::tip 提示
+正则表达式匹配使用 search 而非 match，如需从头匹配请使用 `r"^xxx"` 来确保匹配开头
+:::
+
 
 ## `to_me()`
 
diff --git a/archive/2.0.0a3/api/sched.md b/archive/2.0.0a4/api/sched.md
similarity index 100%
rename from archive/2.0.0a3/api/sched.md
rename to archive/2.0.0a4/api/sched.md
diff --git a/archive/2.0.0a3/api/typing.md b/archive/2.0.0a4/api/typing.md
similarity index 100%
rename from archive/2.0.0a3/api/typing.md
rename to archive/2.0.0a4/api/typing.md
diff --git a/archive/2.0.0a3/api/utils.md b/archive/2.0.0a4/api/utils.md
similarity index 100%
rename from archive/2.0.0a3/api/utils.md
rename to archive/2.0.0a4/api/utils.md
diff --git a/archive/2.0.0a3/guide/README.md b/archive/2.0.0a4/guide/README.md
similarity index 98%
rename from archive/2.0.0a3/guide/README.md
rename to archive/2.0.0a4/guide/README.md
index 86397ee2..43b7f325 100644
--- a/archive/2.0.0a3/guide/README.md
+++ b/archive/2.0.0a4/guide/README.md
@@ -20,6 +20,8 @@ NoneBot2 是一个可扩展的 Python 异步机器人框架，它会对机器人
 
 ## 它如何工作？
 
+<!-- TODO: how to work -->
+
 ~~未填坑~~
 
 ## 特色
diff --git a/archive/2.0.0a3/guide/basic-configuration.md b/archive/2.0.0a4/guide/basic-configuration.md
similarity index 100%
rename from archive/2.0.0a3/guide/basic-configuration.md
rename to archive/2.0.0a4/guide/basic-configuration.md
diff --git a/archive/2.0.0a3/guide/creating-a-project.md b/archive/2.0.0a4/guide/creating-a-project.md
similarity index 100%
rename from archive/2.0.0a3/guide/creating-a-project.md
rename to archive/2.0.0a4/guide/creating-a-project.md
diff --git a/archive/2.0.0a3/guide/getting-started.md b/archive/2.0.0a4/guide/getting-started.md
similarity index 97%
rename from archive/2.0.0a3/guide/getting-started.md
rename to archive/2.0.0a4/guide/getting-started.md
index d52a9396..9c358ead 100644
--- a/archive/2.0.0a3/guide/getting-started.md
+++ b/archive/2.0.0a4/guide/getting-started.md
@@ -136,11 +136,11 @@ QQ 协议端举例:
 现在，尝试向你的 QQ 机器人账号发送如下内容：
 
 ```default
-/say 你好，世界
+/echo 你好，世界
 ```
 
 到这里如果一切 OK，你应该会收到机器人给你回复了 `你好，世界`。这一历史性的对话标志着你已经成功地运行了一个 NoneBot 的最小实例，开始了编写更强大的 QQ 机器人的创意之旅！
 
 <ClientOnly>
-  <Messenger :messages="[{ position: 'right', msg: '/say 你好，世界' }, { position: 'left', msg: '你好，世界' }]"/>
+  <Messenger :messages="[{ position: 'right', msg: '/echo 你好，世界' }, { position: 'left', msg: '你好，世界' }]"/>
 </ClientOnly>
diff --git a/archive/2.0.0a3/guide/installation.md b/archive/2.0.0a4/guide/installation.md
similarity index 94%
rename from archive/2.0.0a3/guide/installation.md
rename to archive/2.0.0a4/guide/installation.md
index 06a88598..4f6e68e1 100644
--- a/archive/2.0.0a3/guide/installation.md
+++ b/archive/2.0.0a4/guide/installation.md
@@ -6,7 +6,10 @@
 请确保你的 Python 版本 >= 3.7。
 :::
 
+请在安装 nonebot2 之前卸载 nonebot 1.x
+
 ```bash
+pip uninstall nonebot
 pip install nonebot2
 ```
 
diff --git a/archive/2.0.0a3/guide/writing-a-plugin.md b/archive/2.0.0a4/guide/writing-a-plugin.md
similarity index 100%
rename from archive/2.0.0a3/guide/writing-a-plugin.md
rename to archive/2.0.0a4/guide/writing-a-plugin.md
diff --git a/archive/2.0.0a3/sidebar.config.json b/archive/2.0.0a4/sidebar.config.json
similarity index 92%
rename from archive/2.0.0a3/sidebar.config.json
rename to archive/2.0.0a4/sidebar.config.json
index c68d09ef..54e78eaa 100644
--- a/archive/2.0.0a3/sidebar.config.json
+++ b/archive/2.0.0a4/sidebar.config.json
@@ -1,4 +1,5 @@
 {
+  "sidebar": {},
   "locales": {
     "/": {
       "label": "简体中文",
@@ -17,6 +18,10 @@
         {
           "text": "API",
           "link": "/api/"
+        },
+        {
+          "text": "插件广场",
+          "link": "/plugin-store"
         }
       ],
       "sidebarDepth": 2,
@@ -51,6 +56,10 @@
                 "title": "nonebot.config 模块",
                 "path": "config"
               },
+              {
+                "title": "nonebot.plugin 模块",
+                "path": "plugin"
+              },
               {
                 "title": "nonebot.matcher 模块",
                 "path": "matcher"
diff --git a/docs/.vuepress/versions.json b/docs/.vuepress/versions.json
index 65abfcfd..56a1527a 100644
--- a/docs/.vuepress/versions.json
+++ b/docs/.vuepress/versions.json
@@ -1,3 +1,3 @@
 [
-  "2.0.0a3"
+  "2.0.0a4"
 ]
\ No newline at end of file
diff --git a/poetry.lock b/poetry.lock
index de144278..1f6dfab9 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -418,49 +418,6 @@ type = "legacy"
 url = "https://mirrors.aliyun.com/pypi/simple"
 reference = "aliyun"
 
-[[package]]
-name = "h2"
-version = "3.2.0"
-description = "HTTP/2 State-Machine based protocol implementation"
-category = "main"
-optional = false
-python-versions = "*"
-
-[package.dependencies]
-hpack = ">=3.0,<4"
-hyperframe = ">=5.2.0,<6"
-
-[package.source]
-type = "legacy"
-url = "https://mirrors.aliyun.com/pypi/simple"
-reference = "aliyun"
-
-[[package]]
-name = "hpack"
-version = "3.0.0"
-description = "Pure-Python HPACK header compression"
-category = "main"
-optional = false
-python-versions = "*"
-
-[package.source]
-type = "legacy"
-url = "https://mirrors.aliyun.com/pypi/simple"
-reference = "aliyun"
-
-[[package]]
-name = "hstspreload"
-version = "2020.10.20"
-description = "Chromium HSTS Preload list as a Python package and updated daily"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.source]
-type = "legacy"
-url = "https://mirrors.aliyun.com/pypi/simple"
-reference = "aliyun"
-
 [[package]]
 name = "html2text"
 version = "2020.1.16"
@@ -476,17 +433,19 @@ reference = "aliyun"
 
 [[package]]
 name = "httpcore"
-version = "0.9.1"
+version = "0.12.0"
 description = "A minimal low-level HTTP client."
 category = "main"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-h11 = ">=0.8,<0.10"
-h2 = ">=3.0.0,<4.0.0"
+h11 = "<1.0.0"
 sniffio = ">=1.0.0,<2.0.0"
 
+[package.extras]
+http2 = ["h2 (>=3,<5)"]
+
 [package.source]
 type = "legacy"
 url = "https://mirrors.aliyun.com/pypi/simple"
@@ -510,7 +469,7 @@ reference = "aliyun"
 
 [[package]]
 name = "httpx"
-version = "0.13.3"
+version = "0.16.1"
 description = "The next generation HTTP client."
 category = "main"
 optional = false
@@ -518,25 +477,13 @@ python-versions = ">=3.6"
 
 [package.dependencies]
 certifi = "*"
-chardet = ">=3.0.0,<4.0.0"
-hstspreload = "*"
-httpcore = ">=0.9.0,<0.10.0"
-idna = ">=2.0.0,<3.0.0"
-rfc3986 = ">=1.3,<2"
+httpcore = ">=0.12.0,<0.13.0"
+rfc3986 = {version = ">=1.3,<2", extras = ["idna2008"]}
 sniffio = "*"
 
-[package.source]
-type = "legacy"
-url = "https://mirrors.aliyun.com/pypi/simple"
-reference = "aliyun"
-
-[[package]]
-name = "hyperframe"
-version = "5.2.0"
-description = "HTTP/2 framing layer for Python"
-category = "main"
-optional = false
-python-versions = "*"
+[package.extras]
+brotli = ["brotlipy (>=0.7.0,<0.8.0)"]
+http2 = ["h2 (>=3.0.0,<4.0.0)"]
 
 [package.source]
 type = "legacy"
@@ -1121,6 +1068,9 @@ category = "main"
 optional = false
 python-versions = "*"
 
+[package.dependencies]
+idna = {version = "*", optional = true, markers = "extra == \"idna2008\""}
+
 [package.extras]
 idna2008 = ["idna"]
 
@@ -1170,7 +1120,7 @@ reference = "aliyun"
 
 [[package]]
 name = "sphinx"
-version = "3.2.1"
+version = "3.3.0"
 description = "Python documentation generator"
 category = "dev"
 optional = false
@@ -1196,7 +1146,7 @@ sphinxcontrib-serializinghtml = "*"
 
 [package.extras]
 docs = ["sphinxcontrib-websupport"]
-lint = ["flake8 (>=3.5.0)", "flake8-import-order", "mypy (>=0.780)", "docutils-stubs"]
+lint = ["flake8 (>=3.5.0)", "flake8-import-order", "mypy (>=0.790)", "docutils-stubs"]
 test = ["pytest", "pytest-cov", "html5lib", "typed-ast", "cython"]
 
 [package.source]
@@ -1565,7 +1515,7 @@ test = ["nonebot-test"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "04acfd9bf32ebb7173922b1d0c28500d1a80ff22307856d61b04668e808c19be"
+content-hash = "70521f44e1004cf7bc3863c5d249e18d31ff526bf4420f38cd1f81ae2cf561fb"
 
 [metadata.files]
 aiofiles = [
@@ -1721,25 +1671,13 @@ h11 = [
     {file = "h11-0.9.0-py2.py3-none-any.whl", hash = "sha256:4bc6d6a1238b7615b266ada57e0618568066f57dd6fa967d1290ec9309b2f2f1"},
     {file = "h11-0.9.0.tar.gz", hash = "sha256:33d4bca7be0fa039f4e84d50ab00531047e53d6ee8ffbc83501ea602c169cae1"},
 ]
-h2 = [
-    {file = "h2-3.2.0-py2.py3-none-any.whl", hash = "sha256:61e0f6601fa709f35cdb730863b4e5ec7ad449792add80d1410d4174ed139af5"},
-    {file = "h2-3.2.0.tar.gz", hash = "sha256:875f41ebd6f2c44781259005b157faed1a5031df3ae5aa7bcb4628a6c0782f14"},
-]
-hpack = [
-    {file = "hpack-3.0.0-py2.py3-none-any.whl", hash = "sha256:0edd79eda27a53ba5be2dfabf3b15780928a0dff6eb0c60a3d6767720e970c89"},
-    {file = "hpack-3.0.0.tar.gz", hash = "sha256:8eec9c1f4bfae3408a3f30500261f7e6a65912dc138526ea054f9ad98892e9d2"},
-]
-hstspreload = [
-    {file = "hstspreload-2020.10.20-py3-none-any.whl", hash = "sha256:0cd540f86c2930fe466348bd984e5ae1c96a0041fb97df61431997523d9e719d"},
-    {file = "hstspreload-2020.10.20.tar.gz", hash = "sha256:0a79313c2f52f18aa0ade1f27664ee39bee1cb4eb2ed1d610e2bd22e2e4050e1"},
-]
 html2text = [
     {file = "html2text-2020.1.16-py3-none-any.whl", hash = "sha256:c7c629882da0cf377d66f073329ccf34a12ed2adf0169b9285ae4e63ef54c82b"},
     {file = "html2text-2020.1.16.tar.gz", hash = "sha256:e296318e16b059ddb97f7a8a1d6a5c1d7af4544049a01e261731d2d5cc277bbb"},
 ]
 httpcore = [
-    {file = "httpcore-0.9.1-py3-none-any.whl", hash = "sha256:9850fe97a166a794d7e920590d5ec49a05488884c9fc8b5dba8561effab0c2a0"},
-    {file = "httpcore-0.9.1.tar.gz", hash = "sha256:ecc5949310d9dae4de64648a4ce529f86df1f232ce23dcfefe737c24d21dfbe9"},
+    {file = "httpcore-0.12.0-py3-none-any.whl", hash = "sha256:18c4afcbfe884b635e59739105aed1692e132bc5d31597109f3c1c97e4ec1cac"},
+    {file = "httpcore-0.12.0.tar.gz", hash = "sha256:2526a38f31ac5967d38b7f593b5d8c4bd3fa82c21400402f866ba3312946acbf"},
 ]
 httptools = [
     {file = "httptools-0.1.1-cp35-cp35m-macosx_10_13_x86_64.whl", hash = "sha256:a2719e1d7a84bb131c4f1e0cb79705034b48de6ae486eb5297a139d6a3296dce"},
@@ -1756,12 +1694,8 @@ httptools = [
     {file = "httptools-0.1.1.tar.gz", hash = "sha256:41b573cf33f64a8f8f3400d0a7faf48e1888582b6f6e02b82b9bd4f0bf7497ce"},
 ]
 httpx = [
-    {file = "httpx-0.13.3-py3-none-any.whl", hash = "sha256:32d930858eab677bc29a742aaa4f096de259f1c78c68a90ad11f5c3c04f08335"},
-    {file = "httpx-0.13.3.tar.gz", hash = "sha256:3642bd13e90b80ba8a243a730275eb10a4c26ec96f5fc16b87e458d4ab21efae"},
-]
-hyperframe = [
-    {file = "hyperframe-5.2.0-py2.py3-none-any.whl", hash = "sha256:5187962cb16dcc078f23cb5a4b110098d546c3f41ff2d4038a9896893bbd0b40"},
-    {file = "hyperframe-5.2.0.tar.gz", hash = "sha256:a9f5c17f2cc3c719b917c4f33ed1c61bd1f8dfac4b1bd23b7c80b3400971b41f"},
+    {file = "httpx-0.16.1-py3-none-any.whl", hash = "sha256:9cffb8ba31fac6536f2c8cde30df859013f59e4bcc5b8d43901cb3654a8e0a5b"},
+    {file = "httpx-0.16.1.tar.gz", hash = "sha256:126424c279c842738805974687e0518a94c7ae8d140cd65b9c4f77ac46ffa537"},
 ]
 idna = [
     {file = "idna-2.10-py2.py3-none-any.whl", hash = "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"},
@@ -2024,8 +1958,8 @@ snowballstemmer = [
     {file = "snowballstemmer-2.0.0.tar.gz", hash = "sha256:df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52"},
 ]
 sphinx = [
-    {file = "Sphinx-3.2.1-py3-none-any.whl", hash = "sha256:ce6fd7ff5b215af39e2fcd44d4a321f6694b4530b6f2b2109b64d120773faea0"},
-    {file = "Sphinx-3.2.1.tar.gz", hash = "sha256:321d6d9b16fa381a5306e5a0b76cd48ffbc588e6340059a729c6fdd66087e0e8"},
+    {file = "Sphinx-3.3.0-py3-none-any.whl", hash = "sha256:3abdb2c57a65afaaa4f8573cbabd5465078eb6fd282c1e4f87f006875a7ec0c7"},
+    {file = "Sphinx-3.3.0.tar.gz", hash = "sha256:1c21e7c5481a31b531e6cbf59c3292852ccde175b504b00ce2ff0b8f4adc3649"},
 ]
 sphinx-markdown-builder = []
 sphinxcontrib-applehelp = [
diff --git a/pyproject.toml b/pyproject.toml
index a0e3944e..1b6e1bc3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "nonebot2"
-version = "2.0.0a3"
+version = "2.0.0a4"
 description = "An asynchronous python bot framework."
 authors = ["yanyongyu <yanyongyu_1@126.com>"]
 license = "MIT"
@@ -24,7 +24,7 @@ include = ["nonebot/py.typed"]
 
 [tool.poetry.dependencies]
 python = "^3.7"
-httpx = "^0.13.3"
+httpx = "^0.16.1"
 loguru = "^0.5.1"
 pygtrie = "^2.3.3"
 fastapi = "^0.58.1"
@@ -32,7 +32,7 @@ uvicorn = "^0.11.5"
 pydantic = { extras = ["dotenv"], version = "^1.6.1" }
 apscheduler = { version = "^3.6.3", optional = true }
 nonebot-test = { version = "^0.1.0", optional = true }
-nb-cli = { version="^0.1.0", optional = true }
+nb-cli = { version="^0.2.0", optional = true }
 
 [tool.poetry.dev-dependencies]
 yapf = "^0.30.0"