Basic drawing stuff
Introduction `Drawing` object
implement CloneDrawingWand
implment ClearDrawingWand
implement basic drawing features
fix for draw_text test
Fixed several memory leaks and added an encoding declaration to wandtests/image.py
Removed unnecessary __enter__ and __exit__ functions from c_magick_char_p (the latter was incorrect anyway; added extra information to docstrings.
Merge pull request #62 from mlindgren/master

Fixed several memory leaks
Changelog for #62
Merge pull request #64 from kkung/drawing

Drawing
Coding style
Add ImageProperty to maintain weakref to Image
Add Image.channel_depths property
Merge branch 'numpy' of github.com:dahlia/wand
Coding style
Add Image.channel_images and ChannelImageDict type
Test image_channels with version aware signatures
Add missing test for Image.composite()
Remove an unused import