Switch to using Zopfli.
Use different semver syntax.
Make node-zopfli optional and fallback on zlib.
Added Coveralls.io code coverage feedback
Revert "Added Coveralls.io code coverage feedback". Introduced errors in the travis-ci test run.

This reverts commit 23503a9bbe01b371e71c30aaca8e0de716225c25.
Only require gzip libraries if there are assets to compress.
Merge pull request #132 from assetgraph/bs-zopfli

Switch to using Zopfli instead of plain gzip.
Update assetgraph to 1.6.35 and remove the logEvents transform (assetgraph/assetgraph#194).
findUntranslatedHtml: Added 'unselectable' to the list of ignored attributes.
Tests: Removed this.timeout calls now that mocha.opts specifies a long timeout.
Tests: Use the unexpected-jsdom plugin.
Html: Introduce a syntax for pieces of text that explicitly should not be translated.

    <div data-i18n="">Do not translate me</div>
    <div data-i18n="text: null">Do not translate me</div>
    <div data-i18n="attr: {title: null}" title="Do not translate me"></div>
Merge the findUntranslatedHtml script into the checkLanguageKeys transform.
checkLanguageKeys: Ignore obscure tags found in Htc files when looking for untranslated text in html.
1.8.54
Fixed jshint nit.
checkLanguageKeys: Don't require attributes of applet and param tags to be translated.
1.8.55
checkLanguageKeys: Ignore more elements and attributes when looking for untranslated text.
1.8.56