Fixes an infrequent bug in hail_hydra that has existed a long time. Currently Factorio does not allow enemy entitities of type 'turret' to target entities of type 'car' (includes cars and tanks). Doing so logs an error. If this changes in the future then the condition cause.type ~= "car" below can be removed.
Merging this hail hydra particle fix (PR 1035) with PR 1032 (diggy patch for 0.18) since all of the updates are related to the particle changes in Factorio 0.18
* Added improved hydra scaling
Added min, max and trigger to config
Added online_player_scale to config
Made hail hydra chances a variable of: - number of online players (toggleable)
- evolution based on a custom formula that has a slow scaling until evolution 0.8
* Removed debug game.prints
* Backwards compatibility
Added conversion from old config to new
* Updated config to show -1 for unused
* Added locking chance
* Added improved hydra scaling
Added min, max and trigger to config
Added online_player_scale to config
Made hail hydra chances a variable of: - number of online players (toggleable)
- evolution based on a custom formula that has a slow scaling until evolution 0.8
* Removed debug game.prints
* Backwards compatibility
Added conversion from old config to new
* Updated config to show -1 for unused
* Added locking chance
* Added behemoth-worm-turret
* Removed old behemoth-biter
* Added new default configuration
