0.0-6 Fixes for stringr 1.0.0.
0.0-5 Added is_windows_drive, r_profile, get_libraries.
0.0-3 More testing, quality fixes.
0.0-2 First releasable version. Added wrappers to base-R's file and dir 
functions for consistent syntax and output.  Also added more utility functions 
and tests.
0.0-1 Added decompose_path and dir_copy.
