Check RETURN statements more rigorously #14
Description
Is your feature request related to a problem? Please describe.
RETURN syntax is skipped over as soon as Spindle knows enough to designate it as a RETURN Statement
Describe the solution you'd like
Each letter should be checked.
Describe alternatives you've considered
There are no alternatives, this serves to help programmers and is very simple to do.
Additional context
Also add an error for any incorrect letter