Update Idea project file
Provide spec filter to run individual tests
Modify idea settings by excluding build and sass-cache directories
Replace parseInt with + prefix to be more strict
Extract test utils and introduce curry, wrap and sequence functions
Add toCompareWith custom matcher for comparing DateTimes
Fix spelling of DateTime.WEDNESDAY
Remove duplicate or unused methods from DateTime

- getDaysInMonth (duplicate)
- getWeekOfYear (duplicate)
- getDayOfYear (use getDayInYear)
- isLeapYear
- getSuffix
- stripped
- getTimezone
Add minusDays to DateTime and use it
Add factory methods fromDate and fromDateTime
Change getMonth() to return [1-12] instead of [0-11]
Add new methods to DateTime
- fromMillis(ms)
- fromDateObject(date)
- withResetMS
- toISOString
Add more validation logic to some DateTime methods
- constructor
- fromIsoDate
- fromIsoDateTime
- getDaysInMonth
- isBetweenDates
Refactor and add unit test for each DateTime function
Update change log
Merge branch 'DateTime'
Build for version 2.5.0