search: add CachePolicy for producing editor proposals

See https://heptapod.host/pythonian/timeseries-refinery/tsview/-/issues/56
test: switch PostgreSQL port to 5434 for server usage
test/tables: record the used tables after simplification in tshistory
test/tables: record the used tables
schema: integrate tsview
schema: register the version at init-db time
migrate: add the operation.vacuum column

closes #41
cli: retire obsolete commands
pkg: prepare 0.10
webapp: add models namespace for vkvstore

closes #40
migrate/interval: prepare migration for the intervals
helper/hash64: this is moved to tshistory.util

Where it will be more widely used.
conftest: use tempconfig
make sure pytype works

It actually works if we remove dead code in cli.py :)

closes #39
use the new configuration object
schema: move stores schema initiation to refinery_pro

Closes #1
docs/medium: nitpicks and formatting

related #28
docs/beginner: a few tweaks
docs/tutorials: have a header for the big chapters below

related to #28
docs/formulas: cleanup
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