Haxe 4.2 fixes, ongoing improvements

Updated SDL, Haxe 4.1 fixes, ongoing improvements

Asset library improvements, continued platform updates

Neko fixes, fix HTTPRequest on HL target

Fixed support for 64-bit Neko on Windows

Fixed issue with asset root path, minor fixes

Android ARM64 support, new AssetBundle type, fixes

Better HL support, faster blur, new SDL version

Better HL support, faster blur, new SDL version

Initial HashLink 1.9 support, SDL update, cURL and JS improvements