ArkScript v4.0.0-rc4

Added

• basic ArkScript code formatter, available through the CLI: arkscript -f|--format
• comments are now tracked in the AST and attached to the nearest node below them

Changed

• allow nodes to be empty when dumping the AST to JSON
• macros can be declared inside a begin block within a cond macro and used in the scope surrounding the cond macro
• arkscript --version and arkscript --help now output ArkScript version with the commit hash