v1.2.0

##Additions:
Added support to make adapter compatible with dbt-core 1.2.2

What's Changed

• update impyla to stable version by @tovganesh in #48
• fix unused imports by @tovganesh in #47
• include warehouse version in instrumentation by @tovganesh in #50
• update readme and dependency for kerberos by @tovganesh in #49
• cleanup conftest parameters by @sujitkp-blr in #56
• fix issues with cloudera instrumentation by @sujitkp-blr in #57
• cross db macro strings by @sujitkp-blr in #58
• Refactor timestamp macro by @sujitkp-blr in #59
• bool any_value macros by @sujitkp-blr in #60
• date related macros by @sujitkp-blr in #61
• hash and misc macros by @sujitkp-blr in #62
• Changes to support list aggregation macro by @sujitkp-blr in #63
• Adding dbt deployment environment instrumentation (#65) by @sujitkp-blr in #68
• grants support by @tovganesh in #64
• support for datediff by @tovganesh in #69
• update version and README for 1.2 release by @tovganesh in #70
• fix and issue when using dbt seed with number values of 0 would get converted to NULL by @tovganesh in #71

Full Changelog: v1.1.4...v1.2.0