Fix remove() not working for jquery version

Close jonthornton#83

Fix updating minTime in refresh()

Close jonthornton#63

Fix time-only behavior

Close jonthornton/jquery-timepicker#451

Fix midnight rollover behavior

Close jonthornton#56 and close jonthornton#57

Fix time interaction with anchor:null

Close jonthornton#52

Fix error when invalid time entered

Closes jonthornton#46

Handle invalid date and time values

Closes #383 and closes jonthornton/jquery-timepicker#383

Fix time rollover when already same date

Closes jonthornton#37

Second attempt at fixing jonthornton#27

Fixed null defaultTimeDelta still setting end time. Closes jonthornto…

…n#26