CHECK LIST

This is a check list before updating MiniBoosts.

Version numbers

Update the followings:

[_] Cargo.toml
[_] README.md
[_] src/booster/
- [_] lpboost/
- [_] erlpboost/
- [_] mlpboost/
- [_] softboost/

$ git tag [tag name]
$ git push origin [tag name]