feat(timezone)!: improves how pace handles timezones #535

Job	Run time
Clippy (stable)	30s
Build docs (stable, macos-latest)	27s
Clippy (Future) (beta)	2m 19s
Build docs (stable, ubuntu-latest)	14s
Rustfmt	9s
Clippy (Future) (nightly)	2m 27s
Build docs (stable, windows-latest)	1m 16s
Check MSRV (pace-rs, 1.74.1)	2m 32s
ubuntu / stable / features	2m 24s
Check MSRV (pace_core, 1.74.1)	1m 54s
Check MSRV (pace_cli, 1.74.1)	1m 59s
Test (stable, macos-latest)	2m 41s
Test (stable, ubuntu-latest)	1m 50s
Test (stable, windows-latest)	2m 57s
Test (beta, macos-latest)	2m 45s
Test (beta, ubuntu-latest)	1m 40s
Test (beta, windows-latest)	2m 54s
Result (CI)	1s
	30m 59s

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