Koishi 3.1.0

• koishi-adapter-discord@1.0.2
• koishi-adapter-kaiheila@1.0.1
• koishi-core@3.1.0
• koishi-plugin-common@4.1.0
• koishi-plugin-image-search@3.0.0
• koishi-plugin-tools@2.0.0
• koishi@3.1.0

Features

• tools: support bilibili (9a37afe)
• core: support command switch (7b5948d)
• common: support switch command (1620482)
• image-search: adding iqdb search (#143) (9cd9abb)
• discord: enhance typings (c517bf0)
• common: add more templates (f5e018f)
• discord: addition at support (29ee7d1)
• core: typing support for spread syntax (c689385)
• core: enhance domain error messages (e2bc856)
• core: add date & posint domain (c4d84b3)
• discord: return full edited message, add nickname (dfcb7da)
• discord: update embeds (3aa2b94)
• discord: upload file instead of using url (07dbd66)
• core: support bot avatar, discriminator attrs (a6ec223)

Bug Fixes

• discord: remove content while sending embed, update segments (7c9706f)
• discord: update types, fix embed issues (963d4a6)
• core: fix ctx.setInterval() (42f9fa4)
• core: strip type for command decl, fix #148 (a1b8b98)
• core: enhance spacing for command option decl, fix #148 (72eb362)

Other Changes

• Update README.md (59201b3)
• build: enhance dtsc generation (5a6d674)
• build: enhance release annoncement (71ff86c)
• build: dtsc for windows (#149) (3f62c59)
• chore: bump versions (425846f)