v0.4.0

Changed

• Mobius.plot/3 is now Mobius.Exports.plot/4
• Mobius.to_csv/3 is now Mobius.Exports.csv/4
• Mobius.filter_metrics/3 is now Mobius.Exports.metrics/4
• Mobius.name() is now Mobius.instance()
• Mobius functions that need to know the name of the mobius instance now
  expect :mobius_instance and not :name
• Mobius.metric_name() is no longer a list of atoms() but is not the metric
  name as a string
• Mobius.RRD internal metric format
• Mobius.RRD.insert/3 typespec now expects [Mobius.metric()] as the last
  parameter

Removed

• Mobius.filter_opt() type
• Mobius.csv_opt() type
• Mobius.plot_opt() type
• Mobius.query_opts/1 function
• Mobius.to_csv/3 function
• Mobius.plot/3 function
• Mobius.filter_metrics/3 function
• Mobius.make_bundle/2 function (use Mobius.mbf/1 instead)
• Mobius.Bundle module
• Mobius.record() type

Added

• Mobius.Exports module for APIs concerning retrieving historical data in
  various formats
• Mobius.Exports.csv/4 generates a CSV either as a string, to the console, or
  to a file
• Mobius.Exports.series/4 generates a series for historical data
• Mobius.Exports.metrics/4 retrieves the raw historical metric data
• Mobius.Exports.plot/4 generates a line plot to the console
• Mobius.Exports.mbf/1 generates a binary that contains all current metrics
• Mobius.Exports.parse_mbf/1 parses a binary that is in the Mobius Binary Format
• Mobius.Exports.UnsupportedMetricError
• Mobius.Exports.MBFParseError
• Mobius.FileError
• :name field to Mobius.metric() type