The previously-scattered image opening logic has been refactored to a
single ImageDescriptor struct/Object available to both JS and C++ code
This removed about 150 LOC but more importantly reduces the complexity
of adding/exposing new operations that require an input image.
Only use gaussian blur for non-linear interpolators
Improves performance of bilinear by ~15%
Add liborc to the packaged build to improve bicubic perf
Add examples of the various interpolation methods
Add bilinear vs bicubic to perf tests
Use v7.40.0+ libvips loader methods
Separate Openslide as input vs Deep Zoom as output
Split tile-based tests into new file
Added assertions for generated tile size
Added OpenSuse 13.1 and 13.2 support in preinstall.sh script.
Added OpenSlide support in preinstall script.
Added unit tests for Deep Zoom and OpenSlide.
Perform sRGB conversion at end of pipe only
withMetadata exports profile, should not convert
Convert one fixture to sRGB to help test
Discovered while investigating #125
Avoids "(sharp:23220): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed" dumped to the console when an unsupported or invalid image is loaded.
