English comments, logger moved to a class, new supported sections, refreshed docs
new features:
- [x] code moved into a `logger` class
- [x] private methods marked as private.
- [x] added section `internal`
- [x] release and annotation arguments.
- [x] refreshed docs.
- [x] Added support of brackets [simple brackets in the commit message]
bug fixes:
- [x] Added multiline comments.
- [x] Added reference support [reference example](http://www.google.ru)
minor changes:
- [x] Added changelog, added readme files.
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