Clojurians Log v2

Specific to this release: • Address https://github.com/seancorfield/next-jdbc/issues/291 by adding an XTDB section to Tips & Tricks. • Added XTDB as a supported database for testing via PR https://github.com/seancorfield/next-jdbc/pull/290. Note: not all features are tested against XTDB due to several fundamental differences in architecture, mostly around primary key/generated keys and lack of DDL operations (since XTDB is schemaless). • Update dev/test dependencies.