tree f08fef287b1e5a1d11283744e51f205e07dfc251
parent f7efe8b75d8664e54702194a49617710df0eeead
author Sam Rawlins <srawlins@google.com> 1468256535 -0700
committer Sam Rawlins <sam.rawlins@gmail.com> 1468936363 -0700

Overhaul link reference definitions.

The new process is similar to CommonMark.js, where reference link definitions
are parsed with block nodes, and inline nodes are parsed after all block nodes
have been parsed.