Code improvements

[Spottedleaf]

• Replace the janky queue implementations in input handler and logger with rl_cdrain_queue
• Ensure memory allocated is valid (non-NULL)
• Redesign logging functions
• With cdrain_queue, change the input handler to use a polling method like logger (would also fix losing input for distance travelled)
• General code cleanup (variable names, error handling, look at splitting utils.h into utils.h and accel.h)

Redesign console handling:

• Add functions for printing without format
• Split lines by \n and print them separately (allocate y-indices beforehand)
• Add explicit character limit (2048)
• Add function for clearing an entire y-position
• Add functions which print and clear atomically

Redesign main loop:

• Bulk read inputs

Atomic value handling:

• Create bridge class and header to avoid using C++ for fixed width atomic integer types
  Variables defined to be using this bridge must include the prefix atomic_

Configurations (rl_config):

-Detailed errors
-General cleanup

Misc:

• Fix negative pre-scale values potentially creating accel values of nan
• Fix bug where logfiles cannot be read while the program is running