Release candidate 0.3.3 beta

[semuadmin]

pyspartn Pull Request Template

Description

1. Update handling of SPARTN-1X-BPAC and SPARTN-1X-EAS-DYN message types (not yet tested).
2. Add improved handling of half-day rollovers when decrypting SPARTN datastreams - thanks to @jonathanmuller @JonathanMullerGeosatis for contribution:

Different constellations are using different time reference : GPS = GAL = QZSS = UTC -18s BEI = UTC -14 GLO = UTC + 3h (exactly 3h, 0 seconds)

Because of that, passing a basedate to convert a 16 bits timetag to 32 bits unambiguous can be either

Correct
Wrong because basedate is ahead of the constellation (GPS for example)
Wrong because the basedate is behind the constellation (GLONASS for example)

In order to account for those time difference not being in sync, 3 unambitious solutions are calculated :

At the time of basedate
12h after basedate
12h prior to basedate
The closest in time is the one returned

By doing so, basedate can be up to 3h inaccurate (as GLONASS is +3h ahead) and still allow for a correct parsing

Fixes #17

Testing

Please test all changes, however trivial, against the supplied pytest suite tests/test_*.py. Please describe any test cases you have amended or added to this suite to maintain >= 85% code coverage.

• [x] test_stream.py test cases enhanced to include 16-bit and 32-bit timetag datastreams with half-day rollovers.

Checklist:

• [x] I agree to abide by the code of conduct (see CODE_OF_CONDUCT.md).
• [x] My code follows the style guidelines of this project (see CONTRIBUTING.MD).
• [x] I have performed a self-review of my own code.
• [x] (if appropriate) I have cited my public domain SPARTN documentation source(s).
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have made corresponding changes to the documentation.
• [x] (if appropriate) I have added test cases to the tests/test_*.py pytest suite to maintain >= 85% code coverage.
• [x] I have tested my code against the full tests/test_*.py unittest suite.
• [x] My changes generate no new warnings.
• [x] Any dependent changes have been merged and published in downstream modules.
• [x] I have signed my commits.
• [x] I understand and acknowledge that the code will be published under a BSD 3-Clause license.