Add linespan support

[bored-engineer]

Added the ability to exact the entire linespan for a tag, not just the line number.

[bored-engineer]

Any updates on this?

[jheld]

Yeah, he doesn't seem particularly interested in maintaining this. You may want to try emailing him, via his address in the AUTHORS file.

[viraptor]

Thanks for the contribution @bored-engineer ! phply is under new management now ;)
I'll try to process the linespan changes soon. Py3 patches will likely be removed, since it's implemented already in another change set.

[bored-engineer]

Hey @viraptor that's great to hear! My apologies the Python 3 patches got mixed in here, wasn't my intention.

[viraptor]

@bored-engineer I'm just trying to process this patch and thinking of how to really handle linespans. As it is currently linespans will always belong to one token only. But that means that linespan of isset in:

isset(
  $a,
  $b);

is still (1,1). I guess I'd expect (1,3). Am I misunderstanding how this should work? Which version of behaviour would you expect?

(merged temporarily in https://github.com/viraptor/phply/tree/linespan)