Error level: Minimum level vs. explicit level

[heuer]

Would be nice if a minimum error level could be provided. If the data is small enough, the algorithm could increase the error level automatically (version must be the same).

>>> import segno
>>> qr_m = segno.make_qr('ABCDE', error='m')
>>> qr_m.designator
'1-M'
>>> qr_h = segno.make_qr('ABCDE', error='h')
>>> q_h.designator
'1-H'
>>> qr_h.symbol_size()  == qr_m_symbol_size()
True

The above should be done automatically, if the user wants it

>>> import segno
>>> qr = segno.make_qr('ABCDEF', please_increase_error_level_if_possible=True)
>>> qr.designator
'1-H'
>>> # With an explicit error level
>>> qr = segno.make_qr('ABCDEF', error='l', please_increase_error_level_if_possible=True)
>>> qr.designator
'1-H'