version 7.2

This is mainly a version with performance optimizations.
Various parts of the code generator now create faster code, and sometimes also smaller code.
Depending on your source code, you can observe pretty significant gains in resulting program size (tens to hundreds of bytes smaller).

Other fixes:

• PETSCII block drawing character mapping was updated to now correctly separate certain box line characters
• Fixed type casting errors related to certain const propagation
• str is now allowed as a parameter type in subroutines (it is passed by reference/address)
• compiler no longer crashes when an input file doesn't exist
• gradle builds now automatically run installDist task after build
• updated to Kotlin 1.5.31