remove unused code

* don't overwrite fields if the exponent is zero

* recompile against KSP 1.4.1

fix interaction with stock ModulePartVariants

Merge remote-tracking branch 'jedtech/master' into dev

complain about "negative dry cost" only if value is significant

Merge branch 'dev' of https://github.com/pellinor0/TweakScale into dev

release v2.3.4

recompile for ksp 1.2.2

recompile for KSP1.2.1

release v2.3.1