hippynn-0.0.3

Updating to version 0.0.3 . Please note that the minimum python version has been updated to 3.9

What's Changed

• mliap interface works with hipnn-coulomb architecture by @sakibmatin in #38
• Interface fix by @bnebgen-LANL in #44
• add example of how to use pair finding in isolation by @lubbersnick in #40
• Allow variable stepping APIs for different optimizers by @lubbersnick in #39
• convert fitting of e0 to take place in float64 by @lubbersnick in #46
• add example for finding close contacts by @lubbersnick in #47
• Lammps null fix by @bnebgen-LANL in #48
• Nodes, docs, and an example for excited states by @tautomer in #42
• Allow ASE dbs with not all same entries. by @mgt16-LANL in #49
• Add fuzzy histogram, pair-finder memory, and KD Tree pair-finder nodes; fix bugs by @EShinkle1 in #50
• Added feature for saving checkpoint every certain epochs by @peterli3819 in #51
• Fix vecmag class from earlier modification by @bnebgen-LANL in #52
• Add MultiGradient node and implement minor improvements and bug fixes for KDTree and Memory nodes by @EShinkle1 in #53
• For updating to python 3.9 by @lubbersnick in #56

Full Changelog: hippynn-0.0.2a2...hippynn-0.0.3