GNSS Multipath Analysis Software v.1.4.3

The biggest change in this PR is speed improvements. A 24-hour RINEX observation file (30s datarate) that took around 12 min to process before, now takes around 2 minutes due to the use of vectorization.

1. Utilize Vectorization for Signal Delay Estimations

   • Implement vectorization for estimating signal delays to achieve significant speed improvements.

2. Enhancements in Cycle Slip Detection and Multipath Resetting

   • Improve cycle slip detection and the resetting of multipath for each continuous arc.

3. Utilize Vectorization for Conversion/Interpolation Operations

   • Implement vectorization when converting/interpolating from Kepler elements to Earth-Centered, Earth-Fixed (ECEF) coordinates and when converting GLONASS state vectors to ECEF. This optimization results in major speed improvements.

4. Utilize Vectorization for Satellite Elevation and Azimuth Computations

   • Implement vectorization when computing satellite elevation and azimuth angles to achieve better performance.

5. Fix Bug in RinexNav Class

   • Address a bug in the RinexNav class where the first epoch for the first satellite was being skipped.

6. Introduce Typing Hints in Main Function

   • Enhance code readability and maintainability by incorporating typing hints in the main function.

7. Add Zstd Compression as User Option

   • Provide users with the option to choose if one want to use Zstd compression for improved data storage.

8. Default SNR Analysis (Optional to Turn Off)

   • Conduct SNR analysis by default, with the flexibility for users to turn it off if needed.

9. Code Refactoring

   • Conduct necessary refactoring to enhance code structure and maintainability.