Commands to be implemented in 1.4.0

[VixikHD]

Thanks to a new api, which is going to be added in 1.4.0, there will be open space for new commands. I would personally like to add at least those commands:

Command	Description
//sel	https://minecraft-worldedit.fandom.com/wiki///sel
//mask	Set mask rule to selected item(s) so it can only affect a particular block type(s) or expression.
//replacenear	Replace all block(s) nerby to pattern
//hpos1, //hpos2	Selects position to block which is player looking at
//clearclipboard	Clears player clipboard
//chunk	Selects the whole chunk as selection
//expand	Expand or grow the region selection based on the player's facing or map direction. It can also be expanded to the opposite side with at the same time.
//line	Creates a line between two positions
//drain	Removes liquids from selection