Changelog
- Remove spoj and codechef parsers, may not added again.
- Using requests.session to fetch problems. This makes upt mush faster than previous version.
- Using selenium.webdriver to login and update cookies. No need to save password in plain text.
- Add aliases for parsers. `atc` and `atcoder` for AtCoder, `cf` and `codeforces` for Codeforces.
- Custom input and output filename. It is easier to swap between graders and testers with this feature.
If you were using previous versions, you need to run `upt init` again. Also you may remove `~/.uptrc`, it is not needed in v3.0.0.