updated test names
added assertion methods for snapBefore/snapAfter
simplified week snap calculation and added floor/ceil private functions
added snapBefore/snapAfter and tests
Merge branch 'master' of github.com:fponticelli/thx.core
Merge remote-tracking branch 'origin/master' into feature/jump
replaced loops with divisions where possible
Merge pull request #31 from fponticelli/feature/jump

Feature/jump