Merge remote-tracking branch 'origin/master'

# Conflicts:
#	compiler/src/prog8/ast/Interfaces.kt
#	compiler/src/prog8/ast/expressions/AstExpressions.kt
#	compiler/src/prog8/ast/processing/AstChecker.kt
#	compiler/src/prog8/ast/processing/IAstModifyingVisitor.kt
#	compiler/src/prog8/ast/processing/IAstVisitor.kt
#	compiler/src/prog8/ast/processing/StatementReorderer.kt
#	compiler/src/prog8/ast/statements/AstStatements.kt
#	compiler/src/prog8/compiler/AstToSourceCode.kt
#	compiler/src/prog8/compiler/target/c64/AsmGen.kt
#	compiler/src/prog8/optimizer/StatementOptimizer.kt
#	examples/test.p8

compiler/src/prog8/compiler/Main.kt

@@ -65,6 +65,7 @@ fun compileProgram(filepath: Path,
             val time3 = measureTimeMillis {
                 programAst.reorderStatements()     // reorder statements and add type casts, to please the compiler later
             }
+            printAst(programAst)
             //println(" time3: $time3")
             val time4 = measureTimeMillis {
                 programAst.checkValid(compilerOptions)          // check if tree is valid