Update README, add object loading method, and version bump to 0.9.0#13

martinmoldrup merged 5 commits intomainmartinmoldrup/snappylapy:mainfrom

features/add-missing-attribute-for-object-in-LoadSnapshatmartinmoldrup/snappylapy:features/add-missing-attribute-for-object-in-LoadSnapshatCopy head branch name to clipboard