Specify interface and author for each module

Spelling out what is public in each module helps to futureproof the
project, and allows the main script to import the relevant names without
contravening best practices.

Buyer was missing from the main script's interface, despite being used
to call Solve. This has been fixed.

Bone Market Solver.py

@@ -1,6 +1,6 @@
 """Use constraint programming to devise the optimal skeleton at the Bone Market in Fallen London."""
 
-__all__ = ['Declaration', 'DiplomatFascination', 'Fluctuation', 'OccasionalBuyer', 'Solve']
+__all__ = ['Buyer', 'Declaration', 'DiplomatFascination', 'Fluctuation', 'OccasionalBuyer', 'Solve']
 __author__ = "Jeremy Saklad"
 
 import argparse

data/adjustments.py

@@ -1,3 +1,6 @@
+__all__ = ['Adjustment']
+__author__ = "Jeremy Saklad"
+
 from enum import Enum
 
 from data.costs import Cost

data/appendages.py

@@ -1,3 +1,6 @@
+__all__ = ['Appendage']
+__author__ = "Jeremy Saklad"
+
 from enum import Enum
 
 from data.costs import Cost

data/buyers.py

@@ -1,3 +1,6 @@
+__all__ = ['Buyer']
+__author__ = "Jeremy Saklad"
+
 from enum import Enum
 
 from data.costs import Cost

data/costs.py

@@ -1,3 +1,6 @@
+__all__ = ['Cost']
+__author__ = "Jeremy Saklad"
+
 from enum import Enum
 
 from ortools.sat.python import cp_model

data/declarations.py

@@ -1,3 +1,6 @@
+__all__ = ['Declaration']
+__author__ = "Jeremy Saklad"
+
 from enum import Enum
 
 from data.costs import Cost

data/embellishments.py

@@ -1,3 +1,6 @@
+__all__ = ['Embellishment']
+__author__ = "Jeremy Saklad"
+
 from enum import Enum
 
 from data.costs import Cost

data/skulls.py

@@ -1,3 +1,6 @@
+__all__ = ['Skull']
+__author__ = "Jeremy Saklad"
+
 from enum import Enum
 
 from data.costs import Cost

data/torsos.py

@@ -1,3 +1,6 @@
+__all__ = ['Torso']
+__author__ = "Jeremy Saklad"
+
 from enum import Enum
 
 from data.costs import Cost

objects/action.py

@@ -1,3 +1,6 @@
+__all__ = ['Action']
+__author__ = "Jeremy Saklad"
+
 class Action:
     """An action that affects a skeleton's qualities."""