4.0.0-alpha: Hifitime refactoring of Epoch

[ChristopherRabotin]

Version 4.0.0-alpha

The main change in this refactoring is that Epochs now keep the time in their own time scales. This greatly simplifies conversion between time scales, and ensures that all computations happen in the same time scale as the initialization time scale, then no sub-nanosecond rounding error could be introduced.

What's Changed

• 4.0.0 dev gh 237 by @gwbres in 4.0.0 dev gh 237 #289
• Refactor epoch to keep time in its own time scale by @gwbres and @ChristopherRabotin in Refactor epoch to keep time in its own time scale #280
• Removed der dependency by @ChristopherRabotin in Removed der dependency #297
• Refactor epochrs as a module by @ChristopherRabotin in Refactor epochrs as a module #298
• Duration serde now human readable + Display of Epoch is now Gregorian in its initialization time scale by @ChristopherRabotin in Duration serde now human readable + Display of Epoch is now Gregorian in its initialization time scale #299
• Improve error handling by @ChristopherRabotin in Improve error handling #300
• Support exceptions in Python by @ChristopherRabotin in Support exceptions in Python #301
• Fix conversion to Gregorian by @ChristopherRabotin in Fix conversion to Gregorian #303
• Add Python regression test for Python strftime time scale  #249 by @ChristopherRabotin in Add Python regression test for #249 #305
• Breaking change: renamed Julian date constants and removed other Julian date constants by @ChristopherRabotin in Breaking change: renamed Julian date constants and removed other Julian date constants #307
• Fix bug in to_gregorian_str by @ChristopherRabotin in Fix bug in to_gregorian_str  #308
• Update pyo3 requirement from 0.21.1 to 0.22.0 by @dependabot in Update pyo3 requirement from 0.21.1 to 0.22.0 #309
• Revert "Update pyo3 requirement from 0.21.1 to 0.22.0" by @ChristopherRabotin in Revert "Update pyo3 requirement from 0.21.1 to 0.22.0" #310

Full Changelog: 3.10.0...4.0.0-alpha

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This discussion was created from the release 4.0.0-alpha: Hifitime rewrite.