Announcing Flent v0.13.0

Announcing Flent v0.13.0

[Toke Høiland-Jørgensen]

This is to announce v0.13.0 of Flent: The FLexible Network Tester.

This release of Flent adds a couple of new features to the GUI, updates
Iperf support and adds a bunch of bugfixes.

- GUI: For line graphs (timeseries and CDF plots), highlight data series
  when the mouse is hovering over the lines themselves or their
  corresponding legend items. This makes it easier to pick out specific
  data series when browsing graphs. There's a toggle to turn off this
  feature, since it can perform badly on slow systems and/or causes
  flicker in some instances on OSX.

- GUI: Experimental feature to run tests from the GUI. Fairly basic thus
  far, but it is possible to run a simple test from the GUI which will
  subsequently be loaded in the graph view.

- File format: Bump file format to v3. The file format now uses UTC
  timestamps everywhere internally, which is an incompatible change;
  hence the version bump. Old data files will be loaded assuming local
  times and converted appropriately on load. File name date stamps are
  still done in local time for the box running the test.

- Bring Iperf support up-to-date. The newest git version of Iperf (2)
  adds support for sub-second timestamps. Flent now detects this and can
  use and parse Iperf results when this support is detected. So far, no
  tests actually use Iperf, though.

- Flent will now capture the module version of a running Cake shaper
  module as part of extended metadata. TCP buffer size limit sysctls are
  now also captured.

- Some bug fixes related to matplotlib and Qt version compatibility and
  weirdness of the OSX file selector dialog.

-Toke