change log for P0546148 (close)

datetimeuserobjecttablefieldtypeoldnew
2020-12-2610:56:52Felber, Volker 2720 Schach 19, p. 299, 10/1957 refsrc date  update11/1957  10/1957 
2020-12-2610:52:40Felber, Volker 2720 Schach 19, p. 299, 11/1957 refsrc page  update 299 
2020-12-2610:52:40Felber, Volker 2720 Schach 19, p. 299, 11/1957 refsrc sourceno  update 19