Initial add of modules, and some functions.
Moved to JSON map file.
Added terrain generation
Did some code cleanup
Added error catching for meta loading.
Added error catching for map loading
Rewrote edge detection to handle multiple slices.
Refactor main loop, optimisations.
Added saving back to the file
Moved map file from JSON, optimised terrain saving, modularised code
Added new_save function
Added BlockingInput to nbinput module
Added menu function using BlockingInput
Added clear screen escape code
Added list_saves and separated out get_map, get_meta
Added menus
Fixed exponential map size.
Merge branch 'master' of https://github.com/itsapi/pycraft