0.9.9d2 changelist (beta branch update)

[list] [*]Added dynamic pickup spawn/drop rates: - Affects shield, fuel and ammo pickups - Now partially selects pickups based on player state and other nearby pickups - Will avoid duplicates or pickups the player cannot use - Enemies will drop more pickups when player is low on resources - Breakables (e.g. crates and barrels) will now always drop at least 1 pickup [*]Pickups dropped by enemies no longer expire [*]Reduced relic spawn rate [*]Pickups that can be collected will now always be attracted (bonus overflow is ignored) [*]Ammo pickups have higher bonuses on Hazard 1 and 2 [*]Adjusted Kraken [*]Adjusted Bladder Mine [*]Reduced Piranha ammo rate 15 -> 12 [*]Added dynamic scaling for weapon impact FX (bigger enemies = bigger explosions) [*]Adjusted Multipine impact FX for better visibility [*]Reduced max enemy density on Hazard 1 and 2 [*]Improved level lighting [*]Added more multi-tile entrances for secret rooms [*]Fixed HUD damage flash not being reset on ship respawn [*]Fixed a phantom wall bug that could cause enemies to spawn outside the level [/list]