Lightnovel-crawler

- Add new crawler: `https://www.qidian.com/` (chinese)
- Fix 8 crawlers: babelnovel, kisslightnovel, worldnovel.online, novelfull, wuxiacom, gravitytales, tapread, rebirthonline.
- Improvement of console argument parser
- Heroku deployment support
- Add tests for some crawlers
- Minor housekeeping and formatting
- Add boolean field `title_lock` with volume items to not format the volume title with default formatter.
- Add boolean field `title_lock` with chapter items to not format the chapter title with default formatter.
- Add boolean field `body_lock` with chapter items to not format the chapter body with default formatter.

- Fix console-bot issue with novel-url recognition

- Fix chapter range selection
- New source: **novelonlinefull**
- Fix babelnovel, tapread, & webnovelonline
- Display rejected source warning
- Remove cairosvg exception at loading
- Update argument list to console bot
- Add new argument: `list-sources` to list all supported sources
- Minor update to test-bot

- [crawler.py] Add method: is_relative_url
- Add all racovimge templates
- Fix racovimge templates that cause cairosvg to crash
- Fix 4scanlation
- Change html_style loader and minifier
- Update issue templates
- Fix setup_pyi and update version
- Removed yukinovel.id

- Add cairosvg data files to fix standalone package
- Remove some italic illegible fonts
- Improve and cleanup download and generate cover
- [test] Add worldnovel.online to ignore list

- [display] Add linux bundle link on `new_version_news`
- Fix jinja2 template loader path (cover image generator)
- Add source: https://kisslightnovels.info
- [console bot] Add a back button in novel selection
- [console bot] Add change range selection option
- Remove prev-next chapter nav in wuxiacom
- [epub] Change cover image size
- [downloader] Remove volume title from chapter body
- [calibre] Add header template for pdf
- New option: `--add-source-url` to append source url at the end of each chapter