Implementation

• Remove client-side enum validation. (BigQuery: Remove client-side enum validation. #3735)
• Add Table.row_from_mapping helper. (Add 'Table.row_from_mapping' helper. #3425)
• Move google.cloud.future to google.api.core (Move google.cloud.future to google.api.core #3764)
• Fix __eq__ and __ne__. (Fix __eq__ and __ne__. #3765)
• Move google.cloud.iterator to google.api.core.page_iterator (Move google.cloud.iterator to google.api.core.page_iterator #3770)
• nullMarker support for BigQuery Load Jobs (nullMarker support for BigQuery Load Jobs (#3449) #3777), h/t @leondealmeida
• Allow job_id to be explicitly specified. (Allow job_id to be explicitly specified. #3779)
• Add support for a custom null marker. (Add support for a custom null marker. #3776)
• Add SchemaField serialization and deserialization. (Add SchemaField serialization and deserialization. #3786)
• Add get_query_results method. (BigQuery - add get_query_results method. #3838)
• Poll via getQueryResults method. (BigQuery: Poll via getQueryResults method. #3844)
• Allow fetching more than the first page when max_results is set. (Allow fetching more than the first page when max_results is set. #3845)

Dependencies

• Bump requests minimum bound to 2.18.0 (Bump requests minimum bound to 2.18.0 #3748)

Documentation

• Reference valid input formats in API docs. (Reference valid input formats in API docs. #3758)
• Use latest/ directory for docs instead of stable/ (Use latest/ directory for docs instead of stable/ #3766)
• Fix documentation link. (Fix wrong BigQuery documentation link. #3825)

OMITTED:

• Wait for load jobs to complete in system tests. (Wait for load jobs to complete in system tests. #3782)