Merge pull request jitsucom#111 from jitsucom/PMF-88-logs-reminder

added version reminder in logs

Merge pull request jitsucom#109 from jitsucom/107-url-randomization

added url randomization

Merge pull request jitsucom#104 from jitsucom/rename-packages

Rename packages

Merge pull request jitsucom#106 from jitsucom/105-add-slack-notificat…

…ions

added slack notifications on server starts, panics, system errors

Postgres primary keys fixes. RedShift GetTableSchema implementation c…

…hanged

fixed clickhouse yaml fields

fixed tests

Merge pull request jitsucom#102 from jitsucom/hotfix/strict_mapping_s…

…ystem_fields

Fixed error with strict mapping removing system fields

Merge pull request jitsucom#100 from jitsucom/feature/snowflake_conne…

…ction_test

Implemented snowflake connection test

CI docker execution fix