Lightkurve

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

- ``TargetPixelFile.create_threshold_mask()`` now only returns one contiguous
mask, which is configurable using the new ``reference_pixel`` argument [345].

- ``TargetPixelFile.interact()``: now requires ``Bokeh v1.0`` or later [355].

- ``utils.detect_filetype()`` automatically detects Kepler or TESS Target Pixel
Files and Light Curve files [340, 350, 356].

- ``LightCurve.estimate_cdpp()``: the argument ``sigma_clip`` was renamed into
``sigma`` [359].

- Fixed minor bugs in ``LightCurve.to_pandas()`` [343],
``LightCurve.correct()`` [347], ``FoldedLightCurve.errorbar()`` [352],
``LightCurve.fold()`` [353].

- Documentation improvements [344, 358].

- Increased the unit test coverage [351].

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

- ``lightkurve.open()`` was added to provide a single function to read in any
light curve or target pixel file from Kepler or TESS and return the appropriate
object [317].

- The ``from_fits()`` methods have been deprecated in favor of
``lightkurve.open()`` [336].

- The ``lightkurve.mast`` module has been removed in favor of the new
``lightkurve.search`` module.

- Various small bugfixes, speed-ups, and documentation improvements
[314, 315, 322, 323, 325, 331, 334, 335].

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

- The ``from_archive()`` methods of ``KeplerTargetPixelFile`` and
``KeplerLightCurveFile`` have been deprecated in favor of the new
``search_targetpixelfile()`` and ``search_lightcurvefile()`` functions.
These allow users to inspect the results of their queries and offer more
powerful features, e.g. cone-searches. If you are currently using
``tpf = KeplerTargetPixelFile.from_archive("objectname")``, please start
using ``tpf = search_targetpixelfile("objectname").download()`` instead.

- ``TargetPixelFile`` objects can now be indexed and sliced. [308]

- The default number of ``windows`` used by the SFF systematics removal
algorithm has been changed from 1 to 10. [312]

- Various small bug fixes and unit test improvements.

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

- We adopted a rule that all method names must include a verb, and all class
properties must be a noun [286]. As a result, we renamed the following methods:

* ``LightCurve.cdpp()`` is now ``LightCurve.estimate_cdpp()``

* ``LightCurve.periodogram()`` is now ``LightCurve.to_periodogram()``

* ``LichtCurve.properties()`` is now ``LightCurve.show_properties()``

* ``TargetPixelFile.aperture_photometry()`` is now
``TargetPixelFile.extract_aperture_photometry()``

* ``TargetPixelFile.centroids()`` is now ``TargetPixelFile.estimate_centroids()``

* ``TargetPixelFile.header()`` is now a property.

- Added ``Periodogram.smooth()`` [288].

- ``Periodogram.estimate_snr()`` was renamed to ``Periodogram.p.flatten()`` [290].

- Lightkurve can now read in light curve files produced using
``LightCurveFile.to_fits()`` [297].

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

- The ``Periodogram`` class has been refactored;

- The ``LightCurve.remove_outliers()`` method now accepts ``sigma_lower`` and
``sigma_upper`` parameters.