optimisation + freeplay song auto detect

art/disable-casesensitive.ps1

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+(Get-ChildItem -Recurse -Directory).FullName | ForEach-Object {fsutil.exe file setCaseSensitiveInfo $_ disable}

art/enable-casesensitive.ps1

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+(Get-ChildItem -Recurse -Directory).FullName | ForEach-Object {fsutil.exe file setCaseSensitiveInfo $_ enable}

art/generateDoc.bat

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+@ECHO OFF
+cd ..
+echo Building Game...
+lime build windows --haxeflag="--macro include('scripting')" --haxeflag="-xml docs/doc.xml"
+echo Generating Documentation...
+haxelib run dox -i docs --include funkin --include scripting
+echo Done!