Borrowed some code from MechJeb2 (which is GPL3) for switching GUI skins. Added a new button right before the help button called "Settings" where the skin can be switched. One of these is the Unity default theme. Updated the license to mention MechJeb2 and the useful code I used.
Moved the Protractor parts to Flight Control in science/career mode. It is now available earlier, and in fact, at the same time as the first MechJeb2 unit. It is also now 400 funds, down from what I felt was on the high side.
Some small odds and ends, such as cleanup. The methods still need slightly better organization, and the comments and documentation needs to be brought up to standard.