0.4.31.109

• FIX - Incorrect engine height specification for Merlin-1B/V engines
• FIX - SC-B-SM - Fuel cell changed to use NTO/Aerozine50
• FIX - Modular Parts -- seat a collider reference into the part.collider field. At least one collider will now properly trigger explosions; the first non-trigger, non-wheel collider that is found on the part. This is handled when the drag cubes are rendered.
• FIX - (Temporary hopefully) Add custom collision handler for modular parts so that they will properly collide using any of their colliders. Not yet added to all parts that need it, but will be over the next few updates; added using a module-manager patch for ease-of-removal when it is no longer needed.
• FIX - Fix a null-ref in NodeFairing opacity update code if the fairing was already jettisoned
• FIX - SSTUModelSwitch - initialize resources and update SSTUVolumeContainer in flight scene if part was previously uninitialized (meaning it skipped the editor; only happens for parts spawned for stock rescue/recovery contracts).
• CHANGE - Merlin engines have all had their mass increased (and thus their TWR decreased) all other stats remain unchanged. TWR is now more in-line with stock engines, and uses a mostly meaningful progression sequence for the development of those engines A-17.5, B-15, BV-12.5, C-22.5, CV-20, D-27.5, DV-23