Fixed the neighbourlist for overlink values other than one
Removed some unneeded GL context flags
Cleaning up the step interface further
Slowly cleaning up the stepped potential interface
Reimplemented stepped potentials, now I can reimplement the umbrella potential
Added snapshotting to replica exchange systems
Merge branch 'experimental' of marcusbannerman.co.uk:dynamo into experimental
Finished implementing a general stepped potential
Moved to an umbrella potential which uses stepped potentials like the stepped interaction, also fixed a new bug in the replica exchange