V2.0

[markirish]

Final push before releasing odbc v2.0.

• Changed the method of creating new Connections and Pools. Instead of calling new with a constructor, use odbc.connect and odbc.pool instead:
  • Old: const connection = new Connection(connectionString)
  • New: const connection = await odbc.connect/pool(connectionString) or odbc.connect/pool((error, connection) =>
• Continued to add configuration options to pools and connections
• Used valgrind to do tests for memory leaks. All memory leaks fixed.