0.3.1

Changes

• xcodes list now ignores pre-release identifiers in available Xcode versions when determining which Xcodes are installed. This fixes an issue where pre-release versions wouldn't show that they were installed in the output, but it also means that if a newer pre-release version is available than one that you have installed, it will still show as installed. For example, if you have 10.2.0-beta.4 installed, and 10.2.0-beta.5 becomes available, xcodes list will print the line 10.2 Beta 5 (Installed). I'd like to further improve this in the future, but I think this matches xcode-version's behaviour for now.