[2.2.0] 2018-10-23
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Added
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- clear input channel offset (auto-clear): adc_offset_auto_clear()
- buffer fixup (when implemented it tries to fix an already acquired buffer
  which is known to be wrong in a fixable way): adc_buffer_fixup()
- extract channel sample from a buffer (which layout is board specfic):
  adc_buffer_get_sample()
- adc_acq supports offset clear: --off-clr
- adc_acq can do software trigger: --trg-sw
- add function to set/get more than one configuration at time:
  adc_apply_config_n(), adc_retrieve_config_n()

Fixed
~~~~~
- binary file writing, samples were not written correctly