v0.7.0 - IMPORTANT bugfix

• IMPORTANT: previously sent data points were being kept and sent on subsequent sends, this
  has been fixed
• Query assumes time values given in to/from are same unit as when it is initialized

v0.6.0

• Timestamp: changed type param name to unit in constructor
• utils: Adds a check for whether this is python2 or 3
• New Error for duplicate ids
• New registerOrSetId() added to iobeam.ClientBuilder to allow you to register a name, or
  it already exists, set the client to use that id.