v1.5.3: Bump version to 1.5.3

Refactor-only release: router/ moved to a top-level package (importable as
tesla_fleet_api.router.*, still re-exported from tesla_fleet_api.tesla), and
teslemetry/tessie vehicles.py renamed to vehicle.py. No behavioural changes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

v1.5.2

What's Changed

• fix(proto): pin protobuf gencode to 6.32.0 for Home Assistant compatibility (#40)
• fix(vehicle): use 1-indexed AutoSeat for auto seat climate (fixes #11) (#41)
• feat(vehicle): add low power mode and keep accessory power signed commands (#42)

Full Changelog: v1.5.1...v1.5.2

v1.5.1

v1.5.1

v1.5.0

v1.5.0

v1.4.7

v1.4.7

v1.4.6

v1.4.6

v1.4.5

v1.4.5

v1.4.3

v1.4.3

v1.4.2

v1.4.2

v1.4.1

Improve vehicle typing in Tessie and Teslemetry