v0.42.2 Stable Release

• Fix #334: Problems purchasing bombs.
• Fix #364: MekHq Calculates Naval Vee Piloting skill using Ground Vee piloting skill.
• Fix #317: Unable to load campaign file after BattleArmor refit
• Fix #298: Medical Details Window Size
• Updated MegaMek.jar and MegaMekLab.jar to 0.42.2