Bug in save_to_file method of CRS object

[smherwig]

In objects.py, I think the save_to_file method of CRS has a copy-paste mistake. Specifically, lines 135-136 are storing the h_parameters in the sqlite3 database. Currently these lines are:

cur.execute("INSERT INTO crs(rowid, pk) VALUES(?,?)",(2*i+3,self.g1.to_binary()))
cur.execute("INSERT INTO crs(rowid, pk) VALUES(?,?)",(2*i+4,self.g2.to_binary()))

However, I believe they should be:

cur.execute("INSERT INTO crs(rowid, pk) VALUES(?,?)",(2*i+3,self.h_parameters_g1[i].to_binary()))
cur.execute("INSERT INTO crs(rowid, pk) VALUES(?,?)",(2*i+4,self.h_parameters_g2[i].to_binary()))