Add gif resize support

[beartung]

add gif resize, save to blob or file

[wronglink]

Wouldn't it be better to use sequences api for this case?

[beartung]

@wronglink which api? @_@

[wronglink]

@beartung take a look at #39 and #66.

[dahlia]

It seems complete, without using sequences API. @beartung, can you write unit tests for it?

[dahlia]

Please remove this and above import traceback.

[beartung]

@dahlia done
@wronglink I think it's better to resize a gif like resizing other format image : )

[dahlia]

@beartung Travis CI says its test failed. Have you run the tests? You can do that using python setup.py test command. (See the docs.)

[dahlia]

@wronglink Sorry for delaying merging sequences API (actually I had worked on this at late of the last year, but not done yet), if we has API and unit tests for it, we can reimplement it using sequences API when that is merged.

[wronglink]

@dahlia sure ;-)

[dahlia]

You probably thought Image.save(), not write().

[dahlia]

Plus, we can make crop() to work as well in the same way, and it will be more consistent.

[beartung]

@dahlia test fixed, I will try crop today :)

[beartung]

@dahlia I added crop and rotate with tests.

[beartung]

so... can this pr merge?

[dahlia]

@beartung I’ll eventually merge this, but I didn’t decide where to merge (master or 0.2-maintenance).

[dahlia]

@beartung I didn’t add credit of you to changelog (ba40270) because I couldn’t find your name. I’ll surely add credit if you want to and let me know your name. 😄

[beartung]

@dahlia thanks for merge it. I have my profile updated. My name is Bear Dong ^O^

[dahlia]

@beartung Done! Thanks. 😸