Merge pull request #1 from davidbanham/minutes

Accept optional minutes in definition
Merge pull request #3 from nizmox/master

fixed node v0.8 bug
Merge pull request #4 from davidbanham/minutes

Minutes
1.0.0
fix bug with end minute check
add tests to catch new bug
Merge branch 'master' of github.com:davidbanham/tz-filter