Allow degrees and seconds in lon/lat fields

[Fil]

Examples:

• "112° 55' E"
• "112° 55.00' E"

[tmcw]

Cool, but can we go all the way and support seconds and minutes?

[Fil]

Oh yes in fact I think I meant "degrees and minutes" (blush).

Here's a more complete commit, following what Wikipedia says:

for example, 40.1875° = 40° 11′ 15″ . Sometimes single and double quotation marks are used instead: 40° 11' 15"

(with NS and WE of course)

And I wonder about what the degree symbol will be in the field. I chose a utf-8 "°" but maybe there are variants?

[tmcw]

Hm, so I guess I mean seconds. I implemented something like this back in this: https://github.com/tmcw/coords/blob/master/index.js#L2-L11 but am not super confident in it. Speaking of which, this will need tests :)

[Fil]

I don't see how these tests work but if you write one I will follow and write the others.

Your code in coords looks fine but does not allow for ’’ and '' (two simple quotes, curly or not).

[tmcw]

Merged and refactored into 0e9a0559c20dd4bb2aac14f5b717fdbde325c296 + https://github.com/tmcw/sexagesimal

[Fil]

Thanks!