Noteworthy changes in version 2.2.31 (2021-09-15)
* agent: Fix a regression in GET_PASSPHRASE. [T5577]
* scd: Fix an assertion failure in close_pcsc_reader. [rG67e1834ad4]
* scd: Add support for PC/SC in "GETINFO reader_list". [rGf32994b0bf]
(prev: T5519 next: T5601)