Add parameter to ㅊ instruction

[ghost]

The final consonant's value [ㄴ is 2, ㄷ is 3, and etc.] determines the direction if the cursor pops a value of zero.

• Value of 0 : rotate original direction by 180° (same as the original 차)
• Value of 1 : no rotation (충 is equivalent to 무 since it will only pop and continues regardless whether the value is 0 or not)
• Value of 2 : rotate original direction by 270°
• Value of 3 : rotate original direction by 90°

Example Code :
방찬반망희
ㅇ밡아오ㅇ
Output :
If user input is 0, the system prints the number 9 (밡아오망) else, the system prints the number 2 (반망).

[dittos]

Is this included in specification? If not, please send a proposal here first.

[youknowone]

Because this behavior breaks backward compatibility, it should be a new version spec rather than revision.
(NOTE: Aheui didn't change the core spec for 10+ years and implementations are (loosely) meet it. The last discussion was: aheui/aheui.github.io#8).