Altrios

What's Changed
* Updated versions of altrios-core and altrios-proc-macros in Cargo.toml files by sakhtar312 in https://github.com/NREL/altrios/pull/51
* Feature/version demo by calbaker in https://github.com/NREL/altrios/pull/52
* improved speed_set and speed_sets validation by calbaker in https://github.com/NREL/altrios/pull/53
* added `new` and `__new__` methods for Elev by calbaker in https://github.com/NREL/altrios/pull/54
* exposed `Heading` and `Elev` in python by calbaker in https://github.com/NREL/altrios/pull/55
* exposed `SpeedSet` via pyo3 by calbaker in https://github.com/NREL/altrios/pull/57
* Updated altrios-core version to 0.2.1 in Cargo.toml by sakhtar312 in https://github.com/NREL/altrios/pull/59
* Updated version to 0.2.1 in pyproject.toml by sakhtar312 in https://github.com/NREL/altrios/pull/58


**Full Changelog**: https://github.com/NREL/altrios/compare/v0.2.0...v0.2.1

**Full Changelog**: https://github.com/NREL/altrios/compare/v0.1.8...v0.2.0

What's Changed
* Fix/feature gate pyo3 stuff by calbaker in https://github.com/NREL/altrios/pull/34
* seems to be working with readme in mdbook by calbaker in https://github.com/NREL/altrios/pull/35
* Feature/drag coeff coeff vector by calbaker in https://github.com/NREL/altrios/pull/37
* update API to allow input of drag coeff vec by calbaker in https://github.com/NREL/altrios/pull/38
* compiles with `DirT` replaced by an enum but 3 tests fail by calbaker in https://github.com/NREL/altrios/pull/39
* Output metric improvements by mbbruch in https://github.com/NREL/altrios/pull/36
* rust tests -> py tests -> wheels and only when relevant paths modified by calbaker in https://github.com/NREL/altrios/pull/41
* renamed `altrios_py` to `altrios_pyo3` to disambiguate by calbaker in https://github.com/NREL/altrios/pull/40
* moved developer doc to mdBook, updated badges, updated release instru… by calbaker in https://github.com/NREL/altrios/pull/43
* Dispatch in speed limit demo by calbaker in https://github.com/NREL/altrios/pull/42
* incremented version numbers by calbaker in https://github.com/NREL/altrios/pull/44
* Ac0.1.4 by calbaker in https://github.com/NREL/altrios/pull/45
* Network enhancements by calbaker in https://github.com/NREL/altrios/pull/46
* add simple network for example purposes by calbaker in https://github.com/NREL/altrios/pull/47


**Full Changelog**: https://github.com/NREL/altrios/compare/v0.1.6...v0.1.8

What's Changed
* V0.1.5 by calbaker in https://github.com/NREL/altrios/pull/29
* Merge branch 'main' of github.com:NREL/altrios by calbaker in https://github.com/NREL/altrios/pull/30
* removed undesired `update_mass` behavior by calbaker in https://github.com/NREL/altrios/pull/31
* Fix/use pwr aux by calbaker in https://github.com/NREL/altrios/pull/32
* Feature/train config and drag api cleanup by calbaker in https://github.com/NREL/altrios/pull/33


**Full Changelog**: https://github.com/NREL/altrios/compare/v0.1.5...v0.1.6

Model files can now be read/written via either `Path`, `PathBuf`, or `str`, and this extends to the python API.

What's Changed
* fix path issues and improve demo testing/debugging experience by calbaker in https://github.com/NREL/altrios/pull/12
* various cleanup things by calbaker in https://github.com/NREL/altrios/pull/13
* 488 rail vehiclescsv anomaly by calbaker in https://github.com/NREL/altrios/pull/14
* Mdbook via gh action by calbaker in https://github.com/NREL/altrios/pull/16
* fix interp3d bug by kylecarow in https://github.com/NREL/altrios/pull/18
* Fix `from_csv_file` function by kylecarow in https://github.com/NREL/altrios/pull/19
* Api cleanup by calbaker in https://github.com/NREL/altrios/pull/15
* Fix/speed limit train sim demo by calbaker in https://github.com/NREL/altrios/pull/17
* Mdbook link doc by calbaker in https://github.com/NREL/altrios/pull/20
* V0.1.4 by calbaker in https://github.com/NREL/altrios/pull/22
* Doc updates by calbaker in https://github.com/NREL/altrios/pull/24
* Fix mdbook links by sakhtar312 in https://github.com/NREL/altrios/pull/23
* (hopefully) fixes failing test in wheels by calbaker in https://github.com/NREL/altrios/pull/25
* Fix/repo dependent actions by calbaker in https://github.com/NREL/altrios/pull/26

New Contributors
* kylecarow made their first contribution in https://github.com/NREL/altrios/pull/18
* sakhtar312 made their first contribution in https://github.com/NREL/altrios/pull/23

**Full Changelog**: https://github.com/NREL/altrios/compare/v0.1.3...v0.1.4