fix(cargo): track working master branch
refactor(LogReaderConfig): use Option rather than comparing to empty string
refactor(git): reduce intermediate values
refactor(iter): use for loops rather than iter().all()
docs(readme): add link to conventions
style(readme): trim spaces from line-ends
refactor(log_writer): use write! macro
refactor(log_writer): change static methods to regular methods
refactor(log_writer): return IoResult for error handling