Allow arguments before and after block-formatted functions.

Allow arguments before and after block-formatted functions.

This treats functions differently from collection literal arguments.
After testing this on a large corpus, that seems to produce the best
output. With this change, the arguments preceding and following a series
of functions are treated as completely independent argument lists, each
with their own splitting choice.

Fixes #369.

R=pquitslund@google.com

Committed: 2e1164d6408cc18e532dee98e157e80c2514d692

[Bob Nystrom, 2015-07-30 06:29:32]

rnystrom@google.com changed reviewers:
+ kevmoo@google.com, pquitslund@google.com

[Bob Nystrom, 2015-07-30 06:29:33]

With luck, this will be the last issue to fix for 0.2.0.

[pquitslund, 2015-07-30 16:05:52]

lgtm

[Bob Nystrom, 2015-07-30 16:09:14]

Committed patchset #2 (id:20001) manually as
2e1164d6408cc18e532dee98e157e80c2514d692 (presubmit successful).