Add podspec, readme, license, docs, etc. to development pods

Add support for editing podspecs, docs, license, readme, module map, etc. for local development pods

Prevent passing empty string to git when running pod repo update --silent

[Gemspec] Bump Molinillo to `~> 0.6.4`

Do not propagate test spec frameworks and libraries into pod target xcconfig

Set language to Swift for test native targets if any dependencies use Swift

Prevent multiple script phases from stripping vendored dSYM

Fix archiving apps with static frameworks

Copy .swiftmodule to enable access to Swift static frameworks

Fix docs for prefix header paths

Fix integration `prefix_header_file` with test specs

Update default Swift version to 3.2 for validation

Fix static_framework Swift pod deps and pod access to dep vendored modules

Fix static_framework Swift pod dependencies and implement pod access to dependent vendored_framework modules

Better warning message for which Swift version was used during validation

Strip vendored dSYMs during embed script phase

Warn when a pod that was added or changed includes script phases

Do not set a `CODE_SIGN_IDENTITY` for macOS app hosts or xctest bundles

Build pod targets with script phases and integrate them properly

Copy resources for static frameworks