v0.4.0

• Override/set path to sqlcmd with
  options(bcputility.sqlcmd.path = "<path-to-sqlcmd>")

• Added bcpVersion and sqlcmdVersion to check versions.

• Specify tables without schema strictly as a character vector of size 1 e.g.
  "<schema>.<table>". The schema and table will be quoted although special
  characters are not recommended except for "_".

• Tests have been added that can run against a local instance of SQL Server.
  These do not work without it as SQL Server is a client/server configuration.

• The README has been updated for new syntax and updated benchmarks.

• bcpImport and bcpExport gain a bcpOptions argument that allows the user
  to include any options from the CLI. See documentation for formatting and
  specification.

• The connections arguments for bcpImport and bcpExport have been
  deprecated--server, database, username, password, trustedconnection. Use
  makeConnectArgs for the connectargs argument which adds Azure AD
  authentication and the option to disregard the trust server certificate.

• The "DBI" dependency has been dropped and all SQL Server queries are run
  using bcp or sqlcmd.

• mapDataTypes is a convenience function to determine SQL Server data type
  conversions. The defaults attempt to determine the smallest type size for
  each column.

• createTable, dropTable, and checkTableExists have been added for
  internals and convenience. The primary purpose would be to define an empty
  table with user-defined types that bcpImport could append to.

• logicals no longer need to be converted from FALSE/TRUE to 0/1 before
  importing in-memory data.

• The argument azure was added to bcpImport and bcpExport for Azure
  Active Directory authentication. This only works for username and password
  authentication.