fimber_io 0.4.1

Version of Fimber package with support for File based loggers - dependent on dart::io

[0.4.1] - Bug fixes

• #75 issue - Fix for TimedRollingFileTree missing passed logLevels and logFormat
• #73 issue - Fix for mute levels list not being distinct

0.4.0 Fimber dependency on dart::io separated

• moved all File based and dart::io package dependent code from fimber to fimber_io

0.3.3 fimber_io split from fimber package