tslib 1.18-rc1

This release includes libts version 0.10.0 and the following changes:

• support for screen-rotation in ts_calibrate and linear module
• add experimental module_raw input_evdev that needs libevdev
• new ts_calibrate --min_interval option to avoid inaccurate calibration
• add ts_calibrate --validate functionality to verify the calibration
• add ts_conf_get() and ts_conf_set() API
• improved CI

This release includes the following bugfixes:

• a5b39bf waveshare-raw: avoid possible overflow by casting a multiplication
• cd26eb5 ts_setup: fix a memory leak