Added whereDay() whereMonth() and whereYear()
To all the database systems I give a vague shite about
MONTH() YEAR() DAY() seem common enough
If 3 of the 4 are the same then it makes sense to just shove them in Grammar.php, and let SQLite be the exception. Still testing the 4 separately though, as that seems rather important.
Merge branch '4.1' of https://github.com/laravel/framework into feature/whereDayMonthYear
Merge branch 'feature/whereDayMonthYear' of https://github.com/philsturgeon/framework into philsturgeon-feature/whereDayMonthYear
DRY up various codes. Comment changes.