This fork adds NitroBolt's scratch-blocks features:

• Object blocks use {object value} and object inputs use {}.

• Array blocks use [array value] and array inputs use [].

• Overrides stay inside object and array block delimiters, such as [array value :: #4D5057].

• Use [ ] when an empty text input is needed instead of an array input.

• \n starts a new visual row inside the same block.

• @delInput and @addInput render the two extendable-input controls independently.

• c-block makes a custom block C-shaped. Put the branch on the following lines and close it with end:

  new function [] :: #FF894D c-block
    say [Hello!]
  end