Add datetime type

[item4]

This PR implemented datetime type with timezone.

Usage

settings

[fields.pub_date]
label = Publication date
type = datetime

printing

{{ this.pub_date | datetimeformat('YYYY-MM-dd HH:mm:ss') }}

Python default

pub_date: 2016-01-13 01:02:03

With timezone abbreviations

pub_date: 2016-01-13 01:02:03 EST

With timezone name

pub_date: 2016-01-13 01:02:03 America/Dominica

With timedelta

pub_date: 2016-01-13 01:02:03 +0900

[mitsuhiko]

Instead of importing pytz it would be cool if this would use the pytz indirection from babel.

[mitsuhiko]

In particular this thing: http://babel.pocoo.org/en/latest/api/dates.html#timezone-functionality

[item4]

Yes, I'll change it

[item4]

I remained pytz.FixedOffset for this case. (not timezone name, given timedelta)

pub_date: 2016-01-13 01:02:03 +0900

[item4]

I didn't add new filter for datetime. Aleady you added it as datetimeformat

[mitsuhiko]

That looks good! I will try to merge this on the weekend. Can you also send a pull request for docs against the website repo?

[item4]

I'll try it.

[ajdavis]

Ooh, I'm excited about this one!

[niijv]

DateTime Picker is in the works too.