Improving Fastlane
One of the problem I had was with Fastlane's new increment_version_number and increment_build_number, is that they use Apple's agvtool to increment the required values, but I use a script that already increments the CFBundleVersion and the CFBundleShortVersionString in my plist, and there's no way to update the CURRENT_PROJECT_VERSION from the project's setting, that agvtool uses.