Update to 0.4.02

This update focuses on rebalancing the Nightmare Slurry bossfight, as well as some QOL features and bugfixes.

• Unit sidebar in Manage Party now shows XP current vs required for next level • See all cards contributing effects to a unit from Manage Party-> Select Unit -> Effects • Fixed Mercenary ability "Second Chance" not activating under certain conditions • Fixed "No free slots in formation" error when Pirate Technic attempts to spawn an Autocannon • Reduced Nightmare Slurry HP • Fixed Nightmare Slurry self-buffing Slurp to extreme damage values • Rebalanced Slurp HP regen • Applied Slurp damage only to targets in the bile pools • Completing an Assassination mission now grants a Boon • Defeating the Sentinal Program now gives XP • Adjusted HP values on Sentinel Program and Allies • Adjusted Vandal damage scaling at higher levels • Fixed Engineer not available after being unlocked • Adjusted some order descriptions for clarity • Fixed "card sacrifice" mode being enabled before a character is chosen for a skill test • Fixed Volcanic Pebble description to show added fire damage • Fixed fire damage not being added to Volcanic Pebble • Opportunist should no longer be able to target members of the same formation • Fixed Field Generator "Explosion Imminent" crash • Crash report startup text no longer clips the start of the dump for large call stacks • Slightly reduced Sling drop rate from vandals • Removed random events from the Slurry encounter • Changed Slurp activation to the end of the round • Additional animations