Don't require a key for {@select}

[sethkinast]

Based on http://stackoverflow.com/a/29151097/938516

If you have to do truth tests on several variables but you want to group the tests for the purposes of any / none / default it's a little more readable to attach variables directly to their truth tests.

If we made this change, though, it moves even further away from the semantics of select-as-switch. Select basically becomes a "grouped truth test".

Any thoughts?

[rragan]

I recall suggesting this omission back when the @or variant was under discussions. Too bad we have the @select legacy meaning. Simple alias of @or?

[jimmyhchan]

(aside)FYI, the @'s are mentions referring to github individuals. Please use the back ticked at instead.(aside)

[sethkinast]

I don't like adding a new tag that's just an alias-- that seems to bloat the API.

If we were changing the semantics of select, I could definitely see introducing a new tag and deprecating the old one, but it's really just relaxing a restriction.

If that's weird, I'm totally OK saying that you just have to have a key :)

[rragan]

I'm ok keeping it with select and making the optional

[prashn64]

I agree with this