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Support custom file writer, you can conveniently add a header to each log file now

Avoid exception when log with null message

Print warning message instead of throwing exception #103

Support multiple backup files

Fix NullPointerException during FilePrinter.appendLog #70 Fix log no longer successfully written after log file deleted during running #77

Support auto separating log into several lines by line separator '\n', see AndroidPrinter(boolean autoSeparate)

• Use more readable API names

Use enableThreadInfo instead of t Use disableThreadInfo instead of nt Use enableStackTrace instead of st Use disableStackTrace instead of nst Use enableBorder instead of b Use disableBorder instead of nb

• Fix the issue that logcat log is truncated if exceed 400 characters #85

Fix NullPointerException in FilePrinter #59

Use Flattener2 instead of Flattener

Support CleanStrategy for FilePrinter, you can specify a strategy to clean the log files automatically.