Current transient filter causes a spurious note with uilleann fingering

[amowry]

Will uilleann pipes fingering, the transient filter in 4.1 cause an extra low D note to be played when all holes (including bell sensor) are covered and then one finger is lifted. The low D is played briefly during the transient filter delay, and then the desired note is played.

Edit: It happens with the new transient filter too and actually happens with any fingering chart. When all holes and the bell sensor are covered (which silences the WARBL with any fingering chart), and then any finger is removed, the lowest note on the scale plays during the filter delay period before the correct note plays.

[amowry]

I pushed a fix for this to the develop branch.