v1.3.1

• Added Mastodon icon.

v1.3.0

• Added crop, flip horizontal and flip vertical icons.

v1.2.0

• Removed Google+ icon.
• Added YouTube, GitLab and Bitbucket icons.

v1.1.3

• Added Instagram icon.
• Minor SVG optimisations to shave off a few more bytes.

v1.1.2

• Nicer help and info icons.

v1.1.1

• Show icon sprite example in README

v1.1.0

• Updated Google+ logo.
• Removed Bower in favour of NPM.

v1.0.4

Add GitHub logo.

v1.0.3

Add new icons for the big 4 social channels (Facebook, Google+, LinkedIn, Twitter).
Fixed one of the icons being incorrect colour (PNG).

v1.0.2

Add 'new-document' extra icon.
Consistent size for document icons.