v0.2.3

Added

• check left-alignment of chainIds & chainNames
• param argument for MMTF.traverse to traverse only the first model

Changed

• traverse atoms before group-bonds in MMTF.traverse
• traverse inter-group bonds in order of models in MMTF.traverse
• fix chainIds & chainNames to be left-alignment in test data
• fixed MMTF.traverse not handling atomIdList being optional
• allow multiple values for --file and --url args in report.js script