Added test case verifying the library can handle Unicode archive filenames
Added three unit tests demonstrating Issue #11
Added functional unicode support (Issue #11)
Refactored code that translates to and from wchar_t into static functions
Tweaked whitespace
Added example usage and documentation link to Readme
Rearranged changelog, sorting most recent changes to the top, and added missing releases
Added description of v2.3 changes to changelog
Merge remote-tracking branch 'origin/v2.3' into issue4