release 1.9

• Syntax change: simplified the asmsub syntax (see the updated p8 lib files)
• fixed bug where assignments were shuffled around in a futile attempt to optimize something
• added parsing of when statement (code generation not yet complete though)
• gradle build system improvements
• fix jiffy clock r/w
• major code restructurings in an attempt to separate things and improve editor and compiler performance
• there's now an AstToSource printer