++RAC to v2.2.4
++RAC for +rac_sendAsynchronousRequest: fix
++Mantle
++OHHTTPStubs
++RAC for xcconfigs bump
Merge pull request #113 from Squirrel/xcconfigs-bump

Bump RAC and Mantle for xcconfigs updates.
Add a workspace for standalone development.
Use the right OHHTTPStubs project.
Bump dependencies.
Pull dependencies from the workspace.
Catch `NSInvalidUnarchiveOperationException` when decoding

If the archive is of a class not present, this exception is thrown.

Ideally we’d be able to use `NSSecureCoding` to abort decoding before running the decode initialiser of any rogue classes.
Note the need to import dependencies.
Scheme version bump.
Bump dependencies.
Bump deps.
Document the workspace.
Bump deps.
Merge pull request #114 from Squirrel/flatten-dependencies

Flatten dependencies
Bump dependencies.
Add a workspace for standalone development.