Remove deprecation AST::Table warnings.

Exactly how these methods will be deprecated is still to be decided.
Add a non-mutating version of map_column
Remove scenarios checking for table deprecation warnings
Update History.md
Disable minitest autorun after loading support code.

@mattwynne @Kosmas @os97673 I think this is a better fix for
cucumber/cucumber-rails#253 so we can revert
cucumber/cucumber-rails@974c93347503fe47948d54008b3b8912e12029f9
Merge branch 'v1.3.x-bugfix'

* v1.3.x-bugfix:
  Disable minitest autorun after loading support code.
  Update History.md
  Remove scenarios checking for table deprecation warnings
  Add a non-mutating version of map_column
  Remove deprecation AST::Table warnings.

Conflicts:
	History.md
	features/docs/wire_protocol_table_diffing.feature
	legacy_features/table_mapping.feature
Merge branch 'master' into new-core