v0.7.0

• The force and potential_energy functions for general interactions now take the vector between atom i and atom j as an argument in order to save on computation.
• Differentiable simulations are made faster and more memory-efficient.
• The AtomsBase.jl interface is updated to v0.2 of AtomsBase.jl.
• extract_parameters and inject_gradients are added to assist in taking gradients through simulations.
• bond_angle and torsion_angle are added.
• random_velocities is added.
• A solute field is added to Atom allowing solute-solvent weighting in interactions. This is added to the LennardJones interaction.
• A proper field is added to PeriodicTorsion.
• The float type is added as a type parameter to System. float_type and is_gpu_diff_safe are added to access the type parameters of a System.
• A types field is added to types such as InteractionList2Atoms to record interaction types.
• find_neighbors can now be given just the system as an argument.
• Visualisation is updated to use GLMakie.jl v0.5.
• Bugs in velocity generation and temperature calculation with no units are fixed.