Add plot_echelle bugfix to CHANGES.rst
enables centroids to be estimated by fitting a bivariate polynomial to the
PSF core. [#544]
+- Fixed a bug in `Seismology.plot_echelle()` which caused the Echelle diagram
+ of a power spectrum to be rendered incorrectly. [#602]
+
+
1.2.0 (2019-10-01)
==================
take all recent Lightkurve API changes into account. [#596]
+
1.1.1 (2019-08-19)
==================
