Adds several useful client-side commands to Minecraft.

These commands include but are not limited to:

• /ccalc- evaluates a mathematical expression.
• /cshrug, /cmote - sends ¯\_(ツ)_/¯ or other emotes in chat.
• /cfov, /cgamma - change game settings, possible outside their normal range.
• /cfind, /cfindblock, /cfinditem - searches for entities, blocks in the client's render distance, and items in nearby inventories.
• /cenchant- enchantment cracking.

For a more complete list of features, see the community-maintained wiki. If something is missing, feel free to add it.