update the parser to address latest 191 comments
`srcset` parsing test, currently failing.

Conflicts:
	tests/tests.js
`srcset` parsing tests for days, some of which currently fail.
remove left over logging
Leaner, speccier parsing of candidates/descriptors.
Credit where credit is due.
Fixed critical `srcset` parsing bug, added more tests.
Bulletproof `srcset` candidate processing, and tests to back it up.
Merge master.
Brings `srcset` parsing code in-line with JSCS linting.
Lint issues.
New dist files.
Merge branch `srcset-parsing`
Introduces a new and (hopefully) completely to-spec `srcset` parser, as well as accompanying tests.