Test Flight v2.6.2.0

What's Changed

• Fix engine configs going missing when copying a part in editor by @siimav in #280
• Fix ignition failures not working outside Career mode by @siimav
• Fix erroneous dynamic pressure penalty message by @siimav
• Remove PartModule-level OnGUI calls since this is really bad for performance by @siimav

Full Changelog: v2.6.1.0...v2.6.2.0