update changelog
ignore cover_db
fix cleaning of constants when glob exists
one mouse todo works in pure perl mode
more constant testing with Moo/Moose/Mouse
Merge pull request #5 from haarg/mouse-fixes

Better testing, Mouse testing fixes, constant fixes
namespace-autoclean-0.19

  - more comprehensive testing with Moo/Mouse/Moose
  - fixed cleaning of constants
travis config