0.4.4: Validate penumbra and line-of-sight + SPK Type 3 support + more orbit comparison options (VNC, RCN frames)

New features and improvements

• Add spk_ezr function to Almanac to closesly match SPICE's spkezr function + various minor fixes by @ChristopherRabotin in #313
• Add state differencing functionality + VNC and RCN frames include time derivative of the rotation matrix by @ChristopherRabotin in #316
• Support SPK Type 3 chebyshev position and velocity by @ChristopherRabotin in #321

Bug fixes

• Fixing line of sight computation + SPICE validation of penumbra calculator by @ChristopherRabotin in #326

Maintenance

• Update lexical-core requirement from 0.8.5 to 1.0.1 by @dependabot in #317
• Update polars requirement from 0.42.0 to 0.43.1 by @dependabot in #318
• Update rfd requirement from 0.14.1 to 0.15.0 by @dependabot in #322
• Update rstest requirement from 0.22.0 to 0.23.0 by @dependabot in #328

Full Changelog: 0.4.3...0.4.4