v1.6.1

Changelog

14c80e1 Merge "docs: added command help output section" from Henrik
38d17bc Merge pull request #203 from scylladb/counters_support
bfb191d Merge pull request #204 from scylladb/warmup_checks_fix
44e953c Merge pull request #207 from scylladb/penberg/gen-tables
cacd510 gemini,docs: cql-feature "all" is now correctly named in docs
dac9a0d gemini: Support generating multiple tables ker keyspace
64fdab9 gemini: disabling json for counters
3afc1fb gemini: handling both jobs being dead and dying
13e8655 mod: Bumped driver to v1.3.1
45edf46 mod: sync up go.sum
4fb5525 schema,gemini: adds support for counters
ecaf13b schema: Extract createTable() function
73f788f schema: Fix hard-coded name of materialized views
537fdb7 schema: generator test fix