v4.0.0

4.0.0 (2018-10-26)

Features

• add a new config.authentication option (6170d19)
• stricter connection config checks (4e21ae0)

BREAKING CHANGES

• This drops support for previousl deprecated
  configuration values and types, and makes the checks a lot stricter than
  before.

Many configuration options no longer accept null values and instead
rely on values being present or undefined instead.

In other cases, configuration options that previously e.g. accepted
string values and automatically converted them to numbers now only
accept actual numbers.

Some options explicitly allow null values to be passed in and take
that as a hint to use whatever is configured on the SQL Server instead.