v2.2.2

• 8825d2c Because yauzl and the FLAC metadata reader are both streaming, combine extracting an audio file from a zipfile with scanning it for FLAC metadata, saving a whole bunch of time. (@othiym23)
• fbf6519 Be more robust in the face of missing tag metadata. (@othiym23)
• b4aba56 Instead of grouping tracks by artist and album, which does bad things to compilations, group either by the album artist and album, or by the containing directory. (@othiym23)
• 8d66885 Warn instead of throwing when there are files left over after assembling albums. (@othiym23)
• 7ad684c Update dependencies to latest, including handling the babel@6 apocalypse and switching from babel/polyfill to babel-polyfill. (@othiym23)
• f816b88 To reduce ambiguity, Promise → Bluebird. (@othiym23)
• 1be9878 When sorting by (potentially partial) ISO date strings, use moment with explicit templates, because it gets bitter otherwise. (@othiym23)
• 0f895f2 src/utils/zip.js wasn't using graceful-fs (@othiym23)
• 209909e Only when there are covers to be copied will the progress tracker track cover copying. Satisfyingly tautological. (@othiym23)
• fa52134 Dump are-we-there-yet state at the end of commands. (@othiym23)