Add CellularAtomataMapGenerator

First pass at a cellular atomata map generator.

Add map.grid and a make_grid function to make it easier to make
numpy arrays for Map purposes.

Add ca.py to test the generator.

ca.py

@@ -0,0 +1,44 @@
+# Eryn Wells <eryn@erynwells.me>
+
+'''
+Run the cellular atomaton from ErynRL and print the results.
+'''
+
+import argparse
+
+from erynrl import log
+from erynrl.geometry import Point, Rect, Size
+from erynrl.map.generator.cellular_atomata import CellularAtomataMapGenerator
+
+
+def parse_args(argv, *a, **kw):
+    '''Parse command line arguments'''
+    parser = argparse.ArgumentParser(*a, **kw)
+    parser.add_argument('--rounds', type=int, default=5)
+    args = parser.parse_args(argv)
+    return args
+
+
+def main(argv):
+    '''The script'''
+
+    args = parse_args(argv[1:], prog=argv[0])
+
+    log.init()
+
+    bounds = Rect(Point(), Size(20, 20))
+
+    config = CellularAtomataMapGenerator.Configuration()
+    config.number_of_rounds = args.rounds
+
+    gen = CellularAtomataMapGenerator(bounds, config)
+
+    gen.generate()
+
+    print(gen)
+
+
+if __name__ == '__main__':
+    import sys
+    result = main(sys.argv)
+    sys.exit(0 if not result else result)