This allows generators to have more control over the placement of suffix. Needed for ‘if’ blocks and function calls which require their suffix code to be somewhere other than the end.
Also, add loop’s prefix to ‘break’ blocks, since the loop’s suffix will be the next statement hit.
Also, reuse procedures_callreturn generator for procedures_callnoreturn.
* Adds message references to message string interpolation, in the form of %{BKY_STRING}.
* Re-adding CONTROLS_IFELSE block using the new syntax, referencing to CONTROL_IF equivalents.
Adding controls_ifelse, an if/else block that is loaded from JSON and does not use mutators. This gives "else" capability to Android & iOS implementations, which don't support JavaScript mutators.
Added this block to the playground simple toolbox and all generators.
