use md5sum to check if a file actually changed
skip directories
properly escape file
be less verbose
only update md5 for files that have been touched
improve output
Ensure changed files are properly detected
Merge pull request #2 from eric/fix-changed

Ensure changed files are properly detected
Update casher

remove bzip2, use gzip
Update casher
Merge remote-tracking branch 'vexor/master'

* vexor/master:
  Update casher
  Update casher
  Ensure changed files are properly detected
  improve output
  only update md5 for files that have been touched
  be less verbose
  properly escape file
  skip directories
  use md5sum to check if a file actually changed