* Simple entity removal in Builders
Performance could be improved
* Removed rocks parameter
The increased radius caused simple-entity to work
* Added another way to remove units that should be more efficient
* Changed find_entities to use area instead of radius
* removed remove_units function
* changed function name from names to name
* added table.shallow_copy
* reworked 'remove_*' builders
* used remove_* builders for existing maps
* update .luacheckrc
* Added links to documentation for each public function
* Added links for new functions
* Remove math and table as globals.
Create exceptions for table.lua and math.lua to modify respective globals and add returns for respective globals.
* Fix lint errors from table and math
* Add regulars to potential train station names
* Decrease odds of in-game player and regular, increase odds of backer
* Clarify that _player_ is not the player that placed the entity
* Specify random's use, cover case of nil random_player
* Added dead trees to starting area
* Add shuffle_table to table utilities
* Refine venus, terraforming, nightfall, day_night_cycle
* Overhaul day_night
* Cleanup from day_night overhaul
