return height of editor widget after drawing

Dependencies

• [2] ERQKFTPV extract method
• [*] 2L5MEZV3 experiment: new edit namespace
• [*] LNUHQOGH start passing in Editor_state explicitly

Change contents

• edit in edit.lua at line 141
  [2.366]

  [5.2701]
  + -- return y drawn until
• edit in edit.lua at line 200
  [4.6090]

  [4.6090]
  + return y