Merge pull request #210 from Squirrel/provide-more-error-info

Provide more error context when we get POSIX errors

Merge pull request #210 from Squirrel/provide-more-error-info

Provide more error context when we get POSIX errors

Merge pull request #190 from slyngbaek/master

Add auth headers to zip download requests not just feed requests.

Merge pull request #176 from Squirrel/fix-updates-again

Don't error if our conditional GET fails.

Merge pull request #175 from Squirrel/fix-pruning

Don't prune if we've already downloaded updates.

Merge pull request #172 from Squirrel/truncate-logs

Truncate logs

Merge pull request #152 from Squirrel/fix-pruning

Fix pruning

Merge pull request #149 from Squirrel/renames

Renames

Merge pull request #145 from Squirrel/xcode6.3

Upgrade dependencies for Xcode 6.3

Merge pull request #143 from Squirrel/quote-paths-when-signing

Quote the paths passed to otool.