Ploonetide

==================

- Added caching to `search_tesscut` to avoid requesting an identical cut out
more than once. [481]

==================

- Added the ``Seismology.interact_echelle()`` method for creating interactive
asteroseismic echelle diagrams. [625]

- Added ``odd_mask`` and ``even_mask`` properties to ``FoldedLightCurve`` to
make it easy to plot odd- and even-numbered transits. [425]

- Fixed a bug which caused ``TargetPixelFile.interact()`` to raise a
``ValueError`` if the pixel file contained NaN flux values. [679]

- Fixed minor issues in the tutorials. [662, 683]

==================

- Added a ``scale='linear'`` option to ``TargetPixelFile.interact()`` to show
pixels using a linear stretch. The default is ``scale='log'``. [664]

- Added a warning if ``SFFCorrector`` is used to correct TESS data. [660]

- Added improved sigma-clipping inside ``RegressionCorrector``. [654]

- Fixed a bug which caused ``LightCurve.show_properties()`` to raise a
``ValueError`` when the time format was not set. [655]

- Fixed a bug which caused ``TargetPixelFile.interact()`` to crash if the
pipeline aperture mask did not contain pixels. [667]

- Fixed a bug which caused ``RegressionCorrector.correct()`` to crash if the
input light curve contained flux uncertainties <= 0. [668]

==================

- Fixed a bug in ``tpf.to_lightcurve()`` which caused ``flux`` and ``flux_err``
to be ``0`` instead of ``NaN`` for cadences with all-NaN pixels. [651]

- Added a new TESS data anomaly flag (bit 13 / value 4096) which was introduced
in Sector 14 to mark cadences affected by strong scattered light. Compared
to the original stray light flag (bit 12), this flag is set automatically by
the pipeline based on background level thresholds. [652]

- Changed the requirements to make ``fbpca`` a required dependency, because
it allows ``DesignMatrix.pca()`` to be faster and more robust. [653]

==================

- Fixed a bug introduced in v1.5.0 which caused an ``ImportError`` related to
``astropy.stats.calculate_bin_edges`` to be raised when a user has an older
version of AstroPy installed (version <3.1 or <2.10). [644]

- Fixed a bug which caused the positions of stars in ``tpf.interact_sky()`` to
be off by one pixel. [638]

==================

- Fixed a bug introduced in Lightkurve v1.5 which caused ``import lightkurve``
on Mac OSX to automatically select the Matplotlib Agg backend. [640]