# MBTiles
* New `--agg-hash (update|verify|off)` flag replaces
`--update-agg-tiles-hash` (still supported, but not shown in the help
screen). This allows bypassing aggregate hash validation entirely,
without either updating or validating it.
* Simplify MBTiles SQL generation
* MBTiles now uses faster `1 << zoom` everywhere, and a dedicated TMS
inversion fn
* split up metadata insert and delete into separate fn
* consolidated schema initialization
* ensure db settings (like pragma) are always reset on new files
# Other
* Always sort JSON-serialized keys for consistency
* this affects `/catalog` key ordering, but content is the same
* Minor code cleanup
* Fix metadata copying
* Introduce a new metadata field `agg_tiles_hash_after_apply` for diff
files
* Added a lot of new info and debug logging
* Simplified Copying interface - not much value in having all the
complex builder pattern here it seems, might as well use a simple
object.
## Testing
* Generate SQLite DBs in memory on the fly to validate just what we need
* Use `insta` for validating DB content
There is now a function `dump(connection) -> Vec<Entry>` to dump the
content of the entire SQLite DB into text with `serde`. At many steps
through the testing, the DB content is validated with the corresponding
.snap file with `insta` crate (which makes this process mega-simple,
including a simple way to "bless" (update) any changes).
## Discovered bugs
* Seems like normalized files do not get copied properly - they contain
extras that should be removed.
* Add ability to generate diff file by specifying `--diff-with-file` to
the `copy` tool
---------
Co-authored-by: Yuri Astrakhan <YuriAstrakhan@gmail.com>
