Eday

- [add] Make unrestricted numbers of hours,minutes,seconds eday('HH+:mm+:ss+')

- [misc] Make eday.now() to return Eday object instead of float.

- [remove] sys.version_info, Python2 conditionals.
- [add] typing, Python3.

- [add] Allow instantiating times +HH:MM:SS.ss+, even when HH>24, MM>60, SS>60.
(useful for time interval computations between times specified beyond midnight.)

- [remove] _time_interval to render time intervals in commonly used units.
- [add] prepending dates with 'N' allows to get days from year 0001-01-01 as zero.
- [remove] python-dateutil for Python3.

- [add] Ability to call eday as function (import eday; eday(<param>))
- [add] The Eday class, inheriting from float, to be able to do math with big dates.
- [add] _time_interval to render time intervals in commonly used units.