v2.8.1 for KSP 1.12.x

What's Changed

• Increased cost of some early nodes that had mistakenly had their cost lowered by @NathanKell
• Fix missing costing on some toxic resource tanks in RF tanks by @StonesmileGit in #2169
• Added RP-1 support for Pioneer Vernier Solid Motor by @ryanc55 in #2175
• Fix "Complete Program" button tooltip not showing reward by @NathanKell
• Add new Collect Basic Crew Science contract to Crewed Orbit by @NathanKell
• Fix Career Log not logging researcher hire costs by @NathanKell and @siimav
• Fix some Service Module tank parts still remaining in the starting node by @NathanKell
• Treat Mercury and Gemini solids as solids for tech tree and ECM purposes, so you don't have to pay for the capsules to get them but you do have to research solids by @NathanKell
• Fix issues around editing vessels where funds could be subtracted even on validation failing by @NathanKell
• Fix a variety of Soyuz/Zond parts being in the wrong nodes by @NathanKell
• Add "Existing" button in the Renovate/Upgrade LC dialog so that the LC can be reset to the existing (currently-built) state by @NathanKell
• Fix the ECMs on a variety of non-procedural solar panel parts by @Capkirk123

Full Changelog: v2.8.0.0...v2.8.1.0