Updated PDC_VER_MONTH, PDC_VER_DAY; marked button-move events as deprecated; added possible future key modifiers.

- BUTTONn_MOVED is a PDCurses*-only extension.  Use REPORT_MOUSE_POSITION
  and keep track of button presses/releases for portability.
- Almost all keyboards supply CapsLock and Super (Windows/Tux) keys.  Many
  supply a Menu key.  It would be quite possible to support these on many
  (WinGUI, WinCon,  SDLn,  X11,  maybe framebuffer/DRM) platforms.

Author: Bill-Gray

curses.h

@@ -41,8 +41,8 @@ Defined by this header:
 #define PDC_VER_MINOR    5
 #define PDC_VER_CHANGE   1
 #define PDC_VER_YEAR   2025
-#define PDC_VER_MONTH     5
-#define PDC_VER_DAY      20
+#define PDC_VER_MONTH     6
+#define PDC_VER_DAY      12
 
 #define PDC_STRINGIZE( x) #x
 #define PDC_stringize( x) PDC_STRINGIZE( x)
@@ -285,10 +285,10 @@ keep track of press/release events to determine which button(s) are
 held at a given time.            */
 
 #ifdef PDC_LONG_MMASK
-   #define BUTTON1_MOVED           (mmask_t)0x20      /* PDCurses */
+   #define BUTTON1_MOVED           (mmask_t)0x20  /* PDCurses* only; deprecated */
    #define PDC_BITS_PER_BUTTON     6
 #else
-   #define BUTTON1_MOVED           (mmask_t)0x10      /* PDCurses */
+   #define BUTTON1_MOVED           (mmask_t)0x10  /* PDCurses* only; deprecated */
    #define PDC_BITS_PER_BUTTON     5
 #endif
 
@@ -299,6 +299,7 @@ held at a given time.            */
 #define BUTTON2_CLICKED        PDC_SHIFTED_BUTTON( BUTTON1_CLICKED,        2)
 #define BUTTON2_DOUBLE_CLICKED PDC_SHIFTED_BUTTON( BUTTON1_DOUBLE_CLICKED, 2)
 #define BUTTON2_TRIPLE_CLICKED PDC_SHIFTED_BUTTON( BUTTON1_TRIPLE_CLICKED, 2)
+             /* mouse move events are PDCurses*-only;  deprecated */
 #define BUTTON2_MOVED          PDC_SHIFTED_BUTTON( BUTTON1_MOVED,          2)
 
 #define BUTTON3_RELEASED       PDC_SHIFTED_BUTTON( BUTTON1_RELEASED,       3)
@@ -1871,6 +1872,15 @@ PDCEX  int     wunderscore(WINDOW *);
 #define PDC_KEY_MODIFIER_NUMLOCK 8
 #define PDC_KEY_MODIFIER_REPEAT  16
 
+/* Modifier masks not used at present,  but which could be added to at  */
+/* least some platforms.  'Super' usually corresponds to the 'Windows' key. */
+
+#define PDC_KEY_MODIFIER_SUPER      0x20
+#define PDC_KEY_MODIFIER_CAPSLOCK   0x40
+#define PDC_KEY_MODIFIER_META       0x80
+#define PDC_KEY_MODIFIER_HYPER      0x100
+#define PDC_KEY_MODIFIER_MENU       0x200
+
 /* Bitflags for trace(), curses_trace(),  for ncurses compatibility.
 Values were copied from ncurses.  Note that those involving terminfo,
 termcap,  and TTY control bits are meaningless in PDCurses and will be