It simply adds the /tickwarp command to either change the server and / or client tickrate or to start a tickwarp where the server tickrate get's set to 1 tick per millisecond (of course only if your pc can handle it, in most cases it will skip ticks or slow down the tick speed) until it warped a specified amount of ticks.
/tickwarp rate <ticklength> [client/server] changes the client and server's or - if specified - just one side's tickrate to one tick every ticklength milliseconds.
/tickwarp warp start <ticks> starts a tickwarp with a length of ticks ticks
/tickwarp warp break stops the current tickwarp
/tickwarp warp pause pauses the current tickwarp
/tickwarp warp continue continues the current tickwarp
/tickwarp warp info prints info about the current tickwarp
