Resolve "Implement basic structure for the hexagon experiment"

Closes #94 (closed)

• New Hexagon class for hexagon simulations
• A few associated unit tests

lisainstrument/__init__.py

@@ -7,3 +7,4 @@ from .meta import __author__
 from .meta import __email__
 
 from .instrument import Instrument
+from .hexagon import Hexagon