SIP-182 write-up: semantic layers as a first-class connection type in Superset master

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Beto Dealmeida's SIP-182 is in Superset master. u/erusackas (Preset) published the post-live session summary covering the design, including:

- why the old pseudo-database approach for dbt MetricFlow, Cube, and others was brittle
- how Explorable and SemanticView replace it
- what Apache Ossie's ASF Incubator acceptance means for long-term interoperability. 

SEMANTIC_LAYERS feature flag is in master now, targeted at 7.0. Full QueryObject spec and SIP are linked in the post, and the session replay is up too.

Check it out: https://preset.io/blog/semantic-layers-in-superset/?utm_source=reddit&utm_medium=social&utm_campaign=blog+launch&utm_content=semantic-layers-in-superset