Set version to 2.57.0

CMakeModules/VersionConfiguration.cmake

@@ -21,7 +21,7 @@ else()
 endif()
 
 set(VERSION_MAJOR 2)
-set(VERSION_MINOR 56)
+set(VERSION_MINOR 57)
 set(VERSION_NANO 0)
 
 option(UPGRADE_DEBUG "" OFF)

release-notes/2.57.0.txt

@@ -0,0 +1,5 @@
+2020-05-05
+
+FIXED:
+
+- Fixed seek bar missing for videos in photo library when casting from another Plex client