Use onewire_addr_t for onewire addresses
Move internal defines out of onewire.h
Remove global variables for search state
use taskENTER_CRITICAL instead of portDISABLE_INTERRUPTS
remove unnecessary onewire_init function
Remove unnecessary critical sections
Use GPIO_OUT_OPEN_DRAIN
reformat/style cleanup
Changed the ds_sensor_t struct to just return a float instead of major/minor
Renamed ds18b20.h functions to have consistent `ds18b20_*` naming.
Removed some unnecessary LICENSE files. Clarified onewire origin/license.
