Changes to Cloning

- Added efficiency scaling. Build or rebuild cloners using better parts
to improve speed of cloning and resource use (aka less biomass used per
clone)
- Cloning slowed down massively. Cloning now takes MUCH longer. Further
multipliers are x2 and x3 for respective parts levels. Maximal cloning
speed is still a fair bit slower than before, but it's an improvement
- Biomass uses goes from 150 (3 meat, normal) to 75 (1 1/2 meat) and
finally 50 (1 meat) in the same fashion

You now have to WORK towards making it easy to clone people. Otherwise
cloning will stay some sort of efficient but snowflakey machine to clone
people with damage so massive defibbing can't be considered
Change to actual balance value
Added changelog
Merge pull request #1305 from dylanstrategie/Cloning-Change

Changes to Cloning