Reduce needless saves by avoiding setting _hasDataChanges flag#2066

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fballiano merged 2 commits intoOpenMage:20.0from

colinmollenhour:reduce-saves-hasdatachanges

Jun 9, 2022

Commits on Jun 9, 2022

Fix multiple issues with object _hasDataChanges flag being set to true when there are no material changes to data. Fixes #1306
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Add note to README.md
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