* Add `MbtType::FlatWithHash`
* Support copying, diffing and applying diffs to and from any
`MbtTypes`s
* Support validating tile data if hash is contained in `*.mbtiles` file
(i.e it is of `MbtType::FlatWithHash` or `MbtType::Normalized`)
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Co-authored-by: rstanciu <rstanciu@rivian.com>
Co-authored-by: Yuri Astrakhan <yuriastrakhan@gmail.com>
