0.12 2014-05-06

 - runs on older perls
 - runs on windows
 - use --format to parse --start and --end
 - added links to github
 - test_requires needs at least Module::Build 0.4004

0.10 2014-05-03

 - Swap end and start time if end < start
 - New options --sort-files: sort input filesj
 - New options --blocksize: specifiy blocksize for random access
 - Optimization: cache date object
 - Added minimal support for compressed files
 - Read from stdin if no files are provided
 - New option --interleave: sort overlapping input files
 - convert dategrep to module
 - improved coverage 

0.01 2014-04-08

 - Initial release