Release 3.1.0

• Mark variables as used, if they are in a format string
• Improve heuristics for subdir(x)
• Add others.muonPath option that allows you to set the path to the muon binary that should be used.
• Fix some edge cases on hover.
• Remove webserver due to difficulties integrating it with the updated sourcekit-lsp
• Update sourcekit-lsp. (Basically rewrites the server portion) It is quite possible there are regressions!
• Don't report stats to the server anymore.
• Update meson API definitions to cfec255027ca7c928defcc665a12e91b439c7c3f
• Add support for meson.options files (And prefer them over meson_options.txt)
• Fix formatting for bigger files