WOOD and PLNT turn grey when hot, bluish when cold
DTEC, generates a spark when something with it's ctype is nearby
Fix things melting with heat sim off

(caused by copy and paste, note that their airloss is all the same)
cold phot doesn't burn things
tpt.element also converts numbers to names
Change air tools to only act inside the brush, not in surrounding cells as well
Move DTEC to electronics menu
Version Increment
Fix MOTD string copy

The missing terminating null character in the string copy meant that
some of the previous message remained when the MOTD changed.
Fix bugs with energy particles in PIPE
Also fix bugs with energy particles that pass directly from PIPE to portal
Fix extra BUBW sometimes being produced when CO2 dissolves
Merge branch 'legacy' of https://github.com/FacialTurd/The-Powder-Toy into jacob1's_mod

(no idea why, I missed like one commit a long time ago, and also wanted to see what would happen when I did the merge)