v0.4.1

• Feature: Support cancellation of pending connection attempts.
  (#84 by @clue)

• Feature: Add warningCount to QueryResult.
  (#82 by @legionth)

• Feature: Add exception message for invalid MySQL URI.
  (#80 by @CharlotteDunois)

• Fix: Fix parsing error message during handshake (Too many connections).
  (#83 by @clue)