Main changes:
- Reorganized repository structure in subumodules
- Added const to stmdev_write_ptr #121
Fixed:
- iis2dlpc: fixed lsb_to_celsius #125
- lis25ba: fixed uninit var use in bus_mode_set #126
- lsm9ds1: fixed magnetometer interrupt latch mode #124
- lsm6dso: fixed _sh_data_rate_set/get #128
- lsm6dso32: fixed _sh_data_rate_set/get #128
New:
- lsm6dso32x
- lis2dh