quicklook: backup plan if celestial + spectral axes ("PV" diagram)
masks' _include should be able to operate without data being given
(masks are defined with or without data to mask)
add a flattened_world feature so that the world coordinates of each
pixel the flattened data array can be retrieved
minor tweaks to the yt viz tools
add changelog entry
add a very simple mask == mask test
changelog
changelog
Merge pull request #147 from keflavich/masks_to_array

Boolean and Lazy masks can return arrays without `data`
Merge branch 'yt_tweaks'

Conflicts:
	CHANGES.rst
Merge branch 'flattened_world'

Conflicts:
	CHANGES.rst
added CLASS LMV reader
added class format to reader, auto-format-determinator
LMV reader updated, tested on real files
fix headers in class_lmv
add a strong warning
refactor: reader->io
fix imports in reader
Merge pull request #70 from keflavich/lmv_reader

CLASS LMV reader
fix a yt version check in the tests: yt-dev versions were not parsed
properly