Material Replacer

A mod that adds a command /rem to replace material in an area.

For example: /rem 0 0 0 11 45 14 oak spruce replaces all oak blocks in this range into spruce blocks and keep their blockstates (facing direction, waterlog, etc.) as much as possible.

Regular Expressions are supported. for example, /rem 0 0 0 11 45 14 "black|blue" white replaces all black or blue dyed block into white version.