Newer Steve skin

The old skin has a beard, the new one does not.

https://github.com/minotar/imgd/issues/66
Let's make this public
Updating ref
Updating reference
Merge pull request #2 from LukeHandle/patch-1

Newer Steve skin
Pull the "alpha signature" of the skin
Merge pull request #3 from minotar/alpha-sig

Pull the "alpha signature" of the skin
Add a fetch functions for Mojang/S3

Also add a Source to Skin so later on we can track where we got the skin
from (adjust caching etc.)
Use NRGBA rather than palleted profile
Merge branch 'master' into patch-mojang-s3

Conflicts:
	avatars.go
Merge pull request #4 from minotar/patch-mojang-s3

Add a fetch functions for Mojang/S3
Let's re-add that NRGBA thing again...
Merge pull request #5 from minotar/patch-mojang-s3

Let's re-add that NRGBA thing again...
Revert "Use NRGBA rather than palleted profile"

This reverts commit 6a23192a7d23c13f9552751eb996d2b9e74f410c.
Convert image type to NRGBA explicitly
Git screwed up on me
Throw error if Mojang gives certain skin

Needs a hash though to be added to blacklist.
Return source when using Char

Also CamelCase on Base64
Merge pull request #7 from minotar/fix-char-source

Return source when using Char
Fix silly