Pysatmadrigal

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* Enhancements
* Moved the OMNI-2 IMF, Dst, and Geomagnetic index Instruments from the
general Madrigal Pandas instrument into new ones
* Moved the NGDC AE index Instrument from the general Madrigal Pandas
instrument to a new one, fixing the Windows memory issue and a problem
with duplicated times
* Added slant TEC (tag of 'los') to the gnss_tec Instrument
* Refactored general load function to extract useful parts of the code that
were used for specific load functions
* Maintenance
* Add manual GitHub Actions tests for pysatMadrigal RC
* Update GitHub Actions workflows for newer versions of pip, updated actions
* Added clean warning test attributes to all Instruments
* Updated documentation to comply with current Ecosystem guidelines
* Replaced setup.py with pyproject.toml

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* Enhancements
* Improved definitions of general and GNSS meta data
* Removed unused logic in cleaning routines
* Moved warning for no cleaning of JRO ISR data to preprocess
* Added a general Madrigal instrument for time-series data
* Added functions to specify all known Madrigal instrument codes and
file formats
* Adapted general listing functions to allow file formats with '*' wildcards
between '.' delimiters, required for some Madrigal file formats
* Standardized the Instrument method kwarg defaults
* Added 'site' tag to the GNSS TEC Instrument
* Added a 'dmsp_ssj' instrument for Auroral Boundary Index data
* Added support for varied use of `two_digit_year_break` to
`methods.general.list_remote_files`
* Implemented `two_digit_year_break` support for `vtec` GNSS TEC Instrument
* Implemented directory creation function in pysat
* Documentation
* Added examples for JRO and GNSS data
* Improved the docstring and CHANGELOG style
* Testing
* Added unit tests for DMSP, general, JRO, and GNSS methods
* Added the packaging module to handle version logic
* Added quick-fail for main pytest command
* Bug
* Fixed bugs in the coordinate conversion functions
* Fixed bug in the general download function that sets the stop date
* Maintenance
* Updated GitHub action and NEP29 versions
* Updated the minimum Madrigal version to allow HDF4 downloads
* Update pysat instrument testing suite, pytest syntax
* Add manual GitHub Actions tests for pysat RC
* Removed code needed to work around pysat bugs

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* Made changes to structure to comply with updates in pysat 3.0.0
* Migrated CI tests from Travis CI to GitHub Actions
* Deprecations
* Restructed Instrument methods, moving `madrigal` to `general` and extracting
local methods from the instrument modules to platform-specific method files
* Cycled testing support to cover Python 3.7-3.9
* Enhancements
* Added coords from pysat.utils
* Added Vertical TEC Instrument
* Added documentation
* Added load routine for simple formatted data
* Expanded feedback during data downloads
* Updated documentation configuration to improve maintainability
* Updated documentation style, displaying logo on sidebar in html format
* Changed zenodo author name format for better BibTeX compliance
* Updated CONTRIBUTING and README information
* Bug Fix
* Updated Madrigal methods to simplify compound data types and enable
creation of netCDF4 files using `Instrument.to_netcdf4()`
* Updated load for multiple files in pandas format
* Fixed remote listing routine to return filenames instead of experiments
* Fixed bug introduced by change in xarray requiring engine kwarg
* Fixed bug that would not list multiple types of files
* Updated JRO ISR drift variable names

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* pypi compatibility

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* zenodo link

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* Alpha release