Bumping version to get metadata updates into PyPI

v1.7.28

bumping version to get metadata updates

releasing a new version v1.7.27

mostly to get 'PARAMETER_TYPE' changes into PyPI (so users can load Cluster CP CDFs)

hopefully this works

bumping version to 1.7.26

Releasing new version

v1.7.25

increasing version

Bumping version to get timebar bug fix into PyPI

v1.7.24

Bumping version to get timebar bug fix into PyPI

bumping version

v1.7.19

bumping version

bumping the version

with the correct version # this time

Bumping the version

Mostly so that I can get the NRV changes into PyPI for some MMS updates in pySPEDAS

increasing version to get new cdf_to_tplot keyword (get_ignore_data) into PyPI

v1.7.16

increasing version to 1.7.16

Increasing version to get latest dependencies into PyPI release

Updates to support Python 3.9, and fix bugs with plotting data with NaNs:
Updating required pyqtgraph version to 0.11.1
Updating required pyqt5 version to 5.15.2
Bumping required Python version to 3.6