Merge tag 'v1.2.1'

1.2.1

 * Update deps (Raymond Feng)

 * Better handle nullable/required (Raymond Feng)
allow false values as params
added test for updating false values
use null if param is undefined
Merge pull request #44 from grosem/master

Allow false values in updates
allow false value for BOOLEAN NOT NULL column
Merge pull request #45 from slively/master

allow false value for BOOLEAN NOT NULL column
v1.2.2
Merge branch 'release/1.2.2' into production