Add docs and scripts

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: 'Bug report'
+about: 'Create a report to help us improve'
+title: ''
+labels: 'Status: Review Needed'
+assignees: ''
+
+---
+
+**Make sure you have read the readme, searched and read the issues related to yours. Otherwise it will be considered as a duplicate which will be closed immediately.**
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+
+1. Command line arguments you are using.
+2. A complete copy of command line output of the delethon. You can use `Ctrl-A` and `Ctrl-C` to copy all of them. Use the following markdown code block syntax is recommended. Copy them into the place between \`\`\`.
+
+```
+```
+
+3. etc.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem. But it is not recommended using screenshots to demonstrate the commandline output unless you think it really matters.
+
+**Environment (please complete the following information):**
+
+- OS: [e.g. windows]
+- Python Version: [e.g. Python 3.7]
+- Delethon Version: [e.g. 0.4.1-alpha/0.5.4-alpha Nuitka windows release]
+
+**Additional context** (Optional)
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/bug_report.zh-Hans.md

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+---
+name: '问题反馈'
+about: '报告问题'
+title: ''
+labels: 'Status: Review Needed'
+assignees: ''
+
+---
+
+**确保你已经看过 readme，也搜索并阅读过和你遇到的情况相关的问题。否则会被认为是重复的并被立刻关闭。**
+
+**描述问题**
+清晰并准确地描述问题。
+
+**复现问题**
+复现问题的步骤:
+
+1. 你使用的命令行参数。
+2. 一份完整的delethon命令行输出。你可以使用`Ctrl-A`和`Ctrl-C`去复制所有输出。推荐使用以下的代码块markdown语法，将代码块复制到\`\`\`和\`\`\`之间即可。
+
+```
+```
+
+3. 等等
+
+**期待的行为**
+清晰并准确地描述你本想做的事情。
+
+**截图**
+合适的话可以提供用以描述问题的截图。但是不推荐用截图来展示命令行输出，除非你真的认为这很有必要。
+
+**操作环境（请提供以下完整数据）：**
+
+- 操作系统: [譬如 windows]
+- Python版本: [譬如 Python 3.7]
+- Delethon版本: [譬如 0.4.1-alpha或0.5.4-alpha Nuitka windows发布版]
+
+**额外信息**（可选）
+任何其他的能描述问题的信息。

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: 'Feature request'
+about: 'Suggest an idea for this project'
+title: ''
+labels: 'Status: Review Needed'
+assignees: ''
+
+---
+
+**Make sure you have read the readme, searched and read the issues related to yours. Otherwise it will be considered as a duplicate which will be closed immediately.**
+
+**Is your feature request related to a problem? Please describe.** (Optional)
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered** (Optional)
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context** (Optional)
+Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/feature_request.zh-Hans.md

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+---
+name: '功能请求'
+about: '新功能建议'
+title: ''
+labels: 'Status: Review Needed'
+assignees: ''
+
+---
+
+**确保你已经看过 readme，也搜索并阅读过和你遇到的情况相关的问题。否则会被认为是重复的并被立刻关闭。**
+
+**描述与这个功能请求有关的某一问题**（可选）
+清晰并准确地描述这个问题。
+
+**描述你期待的解决方案**
+清晰并准确地描述你的解决方案。
+
+**描述你考虑过的替代方案**（可选）
+清晰并准确地描述类似功能的替代方案。
+
+**额外的信息**（可选）
+任何其他的能描述功能请求的信息。

CHANGELOG.md

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+## Changelog
+
+[简体中文](docs/CHANGELOG.zh-Hans.md)
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## TOC
+
+- [Unreleased](#unreleased)
+  - [Added](#addedunreleased)
+  - [Changed](#changedunreleased)
+- [0.1.0-alpha - 2020-03-11](#010-alpha---2020-03-11)
+  - [Added](#added040-alpha)
+
+Click up arrow to go back to TOC.
+
+### [Unreleased]
+
+### [0.1.0-alpha] - 2020-03-11
+
+#### Added(0.1.0-alpha)
+
+- Add basic messages deleting functions.
+
+<escape><a href = "#TOC">&nbsp;↑&nbsp;</a></escape>
+
+[Unreleased]: https://github.com/BingLingGroup/autosub/compare/0.1.0-alpha...HEAD
+[0.1.0-alpha]: https://github.com/BingLingGroup/autosub/releases/tag/0.1.0-alpha