Merge pull request #200 from nwin/master

fixes #198
Use space in comments in webp

As desired by #112.
Use space in comments in png

As desired by #112.
Use space in comments in imageops

As desired by #112.
Use space in comments in gif

As desired by #112.
Use space in comments in jpeg

As desired by #112.
Use space in comments

This fixes #112. This also removes a line of old code that was commented out.
Merge pull request #201 from ruud-v-a/whitespace

Use space after // and ///
Upgraded version number
Merge pull request #203 from bvssvni/master

Upgraded version number
Fix Vec addition with latest nightly

The add function signature no longer uses references for self and rhs,
and in case of vectors the addition is Vec<T> + &[T], so we need to use
a slice on one side.
Merge pull request #204 from Gekkio/latest-nightly-2014-12-16

Fix compilation with latest nightly (2014-12-16)