Added sensor and lazer interaction with bots. (#192)

Includes unit tests.
Also added more tests for the sensor beam.

Cleaned up imports since unused imports warn during build. (#174)

Version 1.6.0-beta. (#159)

Version 1.5.1 Beta (#144)

Version bump to 1.5.0 (#131)

Marked version 1.4.2 beta (#121)

Improve re-loading of genetic ROMs (#106)

* Added a check to avoid adding null items.

* Made Spawn class immutable.

* Made GeneticsAlgorithm member public.

* Changed scorer to be created per-call since multiple threads are used.

* Moved Gene into it's own top-level class to simplify it.
Simplified population initialization.

* Changed loadROM() to pin the rom to genetics.

Fixed IO_COMPASS to be bound from -PI to +PI. (#91)

Added IO_COMPASS and documenting some IO commands (#84)

Implemented IO_MARK and IO_MARK_READ.
Added documentation for some IO commands.
Added IO_COMPASS for finding local orientation.
Changed IO_BATTERY to push a normalized value.
Changed IO_MARK stack order offset pushed first.
Added IO_LASER and IO_RECEIVE aliases.

Added multiple spawn controls to genetics. (#68)

Added valid and invalid IO tracking to robots.
Walls can now generate as hazards sometimes.