v1.3.0

##Additions
Added support for compatibility with dbt-core 1.3.1

What's Changed

• update readme by @tovganesh in #122
• add new tests for docs by @tovganesh in #120
• refactoring incremental - 1 by @tovganesh in #127
• refactoring incremental - 2 by @tovganesh in #128
• add new test TestBaseIncrementalNotSchemaChange by @tovganesh in #125
• Updated releasenotes by @himanshuajmera in #123
• add datatype test by @tovganesh in #124
• add test BaseCurrentTimestampNaive by @tovganesh in #130
• fix issues with nested json for cloudera_tracking payload by @tovganesh in #132
• Mark utils functions that are not supported in Impala by @tovganesh in #131
• add new test TestConcurrencyImpala by @tovganesh in #126
• restructure incremental implementation to follow default implementation by @tovganesh in #129
• bump version for pypi release by @tovganesh in #133

Full Changelog: v1.2.0...v1.3.0