1.1: Turns out C is still a thing

• Support .c and .h files for C-language support. For more information see the atllbuild "sources" documentation
• xcode-emit now has a dedicated overlay at.xcode-emit so you can customize behavior for xcode-emit
• Fix "index out of range" error.
• Support sourcefiles with + in the name and other special characters, for your special snowflake sourcecode
• Support miscellaneous files added to emitted xcode projects, because Info.plist is a thing
• Support atllbuild options include-with-user and link-options, because people use these, apparently
• Fix sourcefiles that pass through multiple symlinks, such as atpm-fetched packages
• Enable suspicious moves, infinite recursion, and WMO
• Compatibility with atbuild 1.9.1
• Set working directory for executables
• Resolve an issue where autocomplete doesn't work, for projects with many dependencies
• Use ATBUILD flag in emitted projects
• Improve support for importing packages that have optional dependencies you haven't downloaded.