* Sensors: refactor configuration
- move sensor implementaion to the .ino,
remove dependency undef / define from sensor files
- update test/build/sensor.h from SENSOR_SUPPORT
- allow to change sensor config variables externally
- `#include <...>` for global headers and libraries,
fix relative path for math library
* add missing sns <-> i2c dependency
* ledrelay should return relay_none as default
* rollback to original test header
* include debug header when requested (relative)
* Added T6613
* Added T6613
* Added T6613
* Added T6613
* Added T6613
* Added T6613
* Added T6613
* Added T6613
* Added T6613
* Updated copyright string
* Buffer from 6 bytes to 8 bytes
Current gcc-4 does not mark this as warning, but gcc-9 notices the 3 char size requirement. Buffer should be 8
* Use 5000ppm max
* travis: move build flags tests outside of hardware header
* mqtt: fix typo
* travis: use files instead of bundling test cases into script
* fixup! travis: use files instead of bundling test cases into script
* fix variable expansion, remove custom h at the end
* add ade7953 to sensors list
* custom.h path as variable
* shellcheck
* fix printf syntax, silent again
* fix bash 4.3 treating empty array as unset variable
Max Prokhorov
James