This zip will wipe /boot /data /system /cache and /devlog. Dalvik-cache is stored in /data so it gets wiped with /data.
It will then reformat those partitions optimally, which should give a slight increase in filesystem speeds. YMMV, seems to be a definite improvement for me, but could be placebo.
Credit for the Format options to TrevE as noted in the zip file.
Note: This is a COMPLETE ROM wipe. The only things it leaves alone are your SD Card(s). I recommend using this before flashing a new ROM. I also recommend you nandroid just in case.
Also if using TWRP, under settings, tell it to use rm -rf for restores, or it will overwrite the format options that are set up.
I take no responsibility if your phone explodes in your hand, burns down your house and eats your dog.
Nor do I take any responsibility for anything else. Use at your own risk.
Let me know if there are any issues please.
Edit: Updated Superwipe. Now wipes /boot, and all extraneous pauses have been removed.