fixes #530 - selects whose options change out from under them will update their bindings
Merge pull request #532 from ractivejs/gh-530

fixes #530 - selects whose options change out from under them will update their bindings
tweak build process, close #528
update dead links in CHANGELOG.md and CONTRIBUTING.md
allow newlines before attributes in tags
Merge pull request #539 from ractivejs/newlines

allow newlines before attributes in tags