Shrew's Alien Infection

A long-awaited update focused on making the aliens more dangerous, as well as fixing some bugs!

• Containment units now spawn incubation fluid when mined
• Incubation fluid now applies the 'hosting' effect to players and animals in contact with it
• 'Complex' and 'Egg room' structures are now rarer
• Fixed bug where 'Complex' structure generated at the surface
• 'Well' structure removed (maybe re-added later)
• 'EggRoom' structure now spawns at a higher y-level
• All 'ship' blocks renamed to 'alien' blocks
• Added new item 'Alien Scrap' used to craft alien blocks
• Alien blocks now drop Alien Scrap instead of the block
• 'Heavy Ship Block Panel' and 'Ship Pillar Panel' now rotate facing the player, and can face up or down
• Significantly increased health of all aliens
• Quadromorphs now prioritise attacking players and other entities that attack them first
• Fixed bug of Quadromprophs not growing into an Onyxomorph after 10 minutes
• Onyxomorphs now prioritise attacking players and other entities that attack them first
• Onyxomorphs now prioritise all other behaviors over breaking torches
• Onyxomorphs now drop 16 Alien Scrap
• Onyxomorphs now always lay eggs when killing an entity without the hosting effect
• Onyxomorphs are now immune to explosions
• Onyxomorphs now have different sounds (Custom sounds planned for a later update)
• Increased tracking range of Onyxomorphs
• Infectors no longer target 'monster' type entities
• 'Monster' type entities can no longer be infected
• Removed 'Alien egg' spawn egg
• Changed layout of alien spawn eggs and blocks in creative tabs
• If an infected entity is killed, a protomorph will spawn