FMSLogo Code

Add the rudiments of FMSLogo's minieditor (the special-purpose editor for creating one procedure.

Remove CCommander::OnRichTextChar(), which was only added as an experiment to see if the corresponding event was ever generated.

Add the "Erase Procedures" dialog box. It doesn't do anything yet, but it looks similar to the one in FMSLogo.

Add the "Edit Procedures" dialog box. It doesn't do anything yet, but it looks similar to the one in FMSLogo.

Add a TODO comment

Fix bug #1669735; FOREACH now throws a "not enough inputs" error when given fewer than two inputs.

Add a test that FOREACH is a macro, not a prodcedure (that is, that OUTPUT or STOP will run in the caller's context).

Test that macros that STOP or OUTPUT do so in the caller's context.

Fix some inconsistent capitalization for MY.REPEAT that I think was an unnecessary distraction from the content that was being presented.

Fix bug #1910177; WAIT now throws a bad input error when given input in the range <-1,0>, instead of doing nothing.