This includes changing compatibility with xcode from 9.3 to 10.0, though it shouldn't have notable impact since the oldest Swift version that we support comes from xcode 10.
Changed xcode version used in CI; changed swift version .swift-version file; changed swift version in podspec; changed swift badge in readme; consistently use double-quotes for strings in podspec; upgrade project to Xcode 9.3 and new project format; use Xcode's "new build system".
Organization name set to "Timofey Solomko"; reset some settings to its default values; remove separate test project and workspace by merging them into main project; move plist files inside xcode project; use project-wide settings as much as possible; set project version 50 (total amount of releases on github) and CFBundleShortVersion to 4.0.1; versions in xcode project are now managed by agvtool: project version is increased by 1 whenever there is a new release, CFBundleShortVersion will continue to be semantically versioned; remove some unused settings; remove header file and empty build phases.
Use recommended settings for TestSWCompression; move SWCompression above TestSWCompression in workspace; remove internal workspace from SWCompression; remove platform-specific schemes and targets from SWCompression; enable support for all Darwin platforms in one target/scheme; set deployment targets as minimal as possible; set correct rpath for TestSWCompression; remove unwanted files from TestSWCompression; reorder files in TestSWCompression; add correct test action to SWCompression scheme; remove code-signing.
Timofey Solomko