Merge pull request xcconfigs#56 from calebd/master

Enable GCC_NO_COMMON_BLOCKS.

Merge pull request xcconfigs#38 from jspahrsummers/whole-module-optim…

…ization

Enable Whole Module Optimization in Release by default

Merge pull request xcconfigs#36 from NachoSoto/master

Framework.xcconfig: setting APPLICATION_EXTENSION_API_ONLY to YES

Merge pull request xcconfigs#33 from jspahrsummers/no-nullability-com…

…pleteness-warnings

Turn off nullability-completeness warnings.

Merge pull request xcconfigs#32 from jspahrsummers/yes-we-just-say-yes

Yes. We just say yes.

Remove USER_HEADER_SEARCH_PATHS default setting

Xcode 6 updates and Swift support

Test tag for Carthage

Add arm64 support

Relatively stable