Merge branch 'f-query-transaction-filter' into 'dev'

add tests for after/until/before/since keywords

See merge request !6

CHANGELOG.md

@@ -24,6 +24,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   evaluated correctly.
 * Test for [caosdb-server#99](https://gitlab.com/caosdb/caosdb-server/-/issues/99).
 * Tests for retrieving older versions.
+* Tests for `BEFORE`, `AFTER`, `UNTIL`, `SINCE` keywords for query
+  transaction filters
+  [caosdb-server#132](https://gitlab.indiscale.com/caosdb/src/caosdb-server/-/issues/132)
 
 ### Changed (for changes in existing functionality)