Bug fixes

• a20b149: Fix asset compile watcher not detecting changes to source files in the root Assets/ directory
• 2d6d989: Add scope for switch statement bodies
• 2d6d989: Make array copies for in-place arithmetic operators less aggressive where possible
• 3d2f301: Make error catching on unary operators more fine grained to avoid hiding other errors
• 5b3ad94: Make creating a new script dirty the program asset
• a679eed: Fix method overload scoring code that was causing some functions to not get chosen properly for a given set of parameter types
• f46d5a0: Fix increment/decrement operators on lower precision types like byte, reported by @Foorack
• f46d5a0: Fix switch conditions not converting numeric condition types to the correct condition type, reported by @Foorack