The following modifications are ALLOWED and are the only the official version of the specified modifications can be used:
Optifine by sp614x or any similar client performance improvement modifications.
Schematica by Lunatrius.
Modifications which allow the enhancement of shaders, graphics, etc. but do not provide a benefit such as ESP.
Modifications which display status messages of armour, active potions, etc.
1.4 - Any modification, hack, cheat or client not mentioned above is to be treated as against the rules and should not be used.
also the quality of the auto clicker you were using doesn't matter, any type of auto clicker is againest the rules and not allowed