This is the abandoned release candidate for Zelda Classic 2.50.3.
Because of various issues with quest compatibility introduced in this build, 2.50.3 was cancelled, and 2.53.0 has replaced it as the followup version to ZC 2.50.2.
With the exception of bugfixes that caused quest incompatibility, all of the bugfixes; and all of the improvements introduced in 2.50.3 RC1 have been ported to ZC 2.53.0.