v1.3.4

Changelog

23fca5d Merge pull request #155 from scylladb/partition_key_not_only_ints
b4bb5bb Merge pull request #156 from scylladb/data_generation_cleanup
8bf6e7e Merge pull request #157 from scylladb/launcher_ensures_dependencies
75e3707 Merge pull request #158 from scylladb/correct_shutdown
f566ec8 dev: explicit dependency downloading
896858c gemini: changelog for 1.3.4
8bb7c3c gemini: partition keys can now be other than ints
cd03665 gemini: shutdown not waiting for warmup
61315d8 schema: removed unused data gen functions
aab1630 store: type checking helper more exhausted