Add Carryout and Trav'ler Pro to firmware variant table, SK-1000
physical specs, error messages, calibration procedures, emergency
stow notes, motor behavior details, and Gpredict setup config.
Note leap-frog bug is also present in Pro repo.
Extract Gabe Emerson's Trav'ler rotor scripts into a proper Python
library with firmware protocol abstraction (HAL 2.05 + HAL 0.0.00),
Hamlib rotctld TCP server, Click CLI, and isolated leap-frog algorithm
with the elevation copy-paste bug fixed.
