Docs: be more explicit that Images usually handles color along dim1 (fix #87)
Be more explicit about typical storage order (more detail on #87).
Describe properties in usage.md
Added `rgbim` in the vein of `grayim`.
rgbim -> colorim and support setting colorspace.
Support RGBA image output through magick.
Document and test `colorim`.
s/@assert/@test/ in test/core.jl
Merge pull request #88 from lucasb-eyer/master

Added `rgbim` in the vein of `grayim`.
Fix LoG kernel

Also increases kernel support, so that sum(kernel) ~ 0.  Note that this
kernel has a positive excitatory region instead of a negative one, so
filtered images will be inverted compared to the old version.
Add generic support for spacedirections
Fix tests on 0.2 (@test_throws argument change)
Use @inbounds in imfilter_gaussian
Indexing performance tweaks for imfilter_gaussian
Clearer `convert` error message (See #91).
Merge pull request #92 from lucasb-eyer/master

Clearer `convert` error message (See #91).
Fix deprecated `-` warning in `ncc`.
Merge pull request #95 from lucasb-eyer/master

Fix deprecated `-` warning in `ncc`.
Merge branch 'master' of git://github.com/timholy/Images.jl
Load images that do not have a bit depth that is a multiple of 8