1.3.0 🐘 PostgreSQL WITH TIME ZONE & 🔍 BigQuery PARTITION BY Improvements

Fixes

🐘 PostgreSQL:

1. Timezone was moved out from type definition to keyword 'with_time_zone' it can be True (if with time zone) or False (if without)

🔍 BigQuery:

1. Previously Range in RANGE_BUCKETS was parsed as a columns, now this behaviour is changed and
   range placed in own keyword - 'range' (can be array or str).
   Also for all ``*_TRUNC PARTITIONS` like DATETIME_TRUNC, TIMESTAMP_TRUNC, etc, second argument moved to arg 'trunc_by'

Improvements

🐘 PostgreSQL:

1. Added support for PostgreSQL with / without time zone - #250

🔍 BigQuery:

1. Added support for GENERATE_ARRAY in RANGE_BUCKETS #183