Fills default values with NULL in existing rows like others DBs do

fix raw with() calls

enable Raw type alias of the '.with()' function

Update changelog

Prepare for 0.18.4

Bump version

Bump version

Prepare for 0.16.7 release (knex#3190)

Prepare for 0.16.6 release (knex#3188)

* Bump version to 0.16.4

* Update changelog and bump version for 0.16.6 release

Bundle polyfills to prevent breaking existing Node 6 setups (knex#3140)

* Bump version to 0.16.4

* Hotfix polyfills for Node 6 in 0.16.5

* Remove unneeded upgrade instruction