3.0.1
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- Fix Python2 regression in HTTP error handling.

3.0.0
-----
- Python3 support.
- ValueError is raised (instead of whatever different versions of Flask/werkzeuf raise) when `mode` kwarg is specified along with `images.{mode}` route.
- Fix for changing location of functions in dependencies. (#50)
- Fix If-Modified-Since which erroneously had microseconds. (#37)

2.1.2
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- Fix for local cache not taking "enlarge" parameter into account.

2.1.1
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- Fix for Cache-Control header to be a string (as all headers should be).

2.1.0
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- Retina/HiDPI support (still alpha; the API is subject to change).
- Transformation support (still alpha; the API is subject to change).
- `url_for(..., _external=True)` works.
- `enlarge=False` will not enlarge images.
- `resized_img_attrs(...)` to calculate final width and height.

2.0.0
-----
- INCOMPATIBILITY: Many things moved to flask.ext.images.core; `Images` and
  `resized_img_src` remain.
- Compatible with Flask 0.9 (from 0.10).

1.1.5
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- Background colours are parsed by PIL; hex and html colours are now allowed.
- Fix for extension parsing bugs with URLs.

1.1.4
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- Fix regression introduced by 1.1.3 (such that remote images did not work).

1.1.3
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- Fix 3 security bugs, each of which would allow for reading any image on disk.

1.1.2
-----
- Depend on Pillow OR PIL.

1.1.1
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- Fix bug stopping remote images from working.

1.1.0
-----
- `url_for('images', **kw)` to ease transition from static files.
- Compatible with Pillow.

1.0.0
-----
- First official release!
- Removed lots of backwards compatibility with my own sites:
    - restricted default path to ['static'];
    - removed synonyms for `resized_img_src`.
