Merge tag 'v1.6.1'

1.6.1
Synchronize with cachedRelations
Work around for Date default

See https://github.com/strongloop/loopback-connector-postgresql/issues/15
Update link to doc
Add "hasOne" to relationTypes
Make sure type of the foreign key match the primary key

See https://github.com/strongloop/loopback/issues/353
Normalize filter.order and enforce more checks
Merge pull request #155 from strongloop/fix/missing-relation-type

Add "hasOne" to relationTypes
Merge pull request #157 from strongloop/feature/query-order

Normalize filter.order and enforce more checks
Merge pull request #156 from strongloop/feature/fix-lb-353

Make sure type of the foreign key match the primary key
Bump version and update deps
Merge branch 'release/1.6.2' into production