version: Bump to version 3.1.0, now that we're in the right repo.

This is the _development_ version that will become 3.2.0 for a stable release!

I have no idea if I got all the places where one needs to adjust the version
number, I'm new here.  :)

Author: icculus

CMakeLists.txt

@@ -8,7 +8,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
 
 # See docs/release_checklist.md
 set(MAJOR_VERSION 3)
-set(MINOR_VERSION 0)
+set(MINOR_VERSION 1)
 set(MICRO_VERSION 0)
 set(SDL_REQUIRED_VERSION 3.0.0)
 

include/SDL3_mixer/SDL_mixer.h

@@ -208,7 +208,7 @@ typedef struct MIX_Group MIX_Group;
  *
  * \since This macro is available since SDL_mixer 3.0.0.
  */
-#define SDL_MIXER_MINOR_VERSION   0
+#define SDL_MIXER_MINOR_VERSION   1
 
 /**
  * The current micro (or patchlevel) version of the SDL_mixer headers.

src/version.rc

@@ -9,8 +9,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 3,0,0,0
- PRODUCTVERSION 3,0,0,0
+ FILEVERSION 3,1,0,0
+ PRODUCTVERSION 3,1,0,0
  FILEFLAGSMASK 0x3fL
  FILEFLAGS 0x0L
  FILEOS 0x40004L
@@ -23,12 +23,12 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "\0"
             VALUE "FileDescription", "SDL_mixer\0"
-            VALUE "FileVersion", "3, 0, 0, 0\0"
+            VALUE "FileVersion", "3, 1, 0, 0\0"
             VALUE "InternalName", "SDL_mixer\0"
             VALUE "LegalCopyright", "Copyright (C) 2025 Sam Lantinga\0"
             VALUE "OriginalFilename", "SDL3_mixer.dll\0"
             VALUE "ProductName", "Simple DirectMedia Layer\0"
-            VALUE "ProductVersion", "3, 0, 0, 0\0"
+            VALUE "ProductVersion", "3, 1, 0, 0\0"
         END
     END
     BLOCK "VarFileInfo"