Documentation work

Added missing bits of documentation for GLFW_HOVERED.

docs/news.dox

@@ -116,6 +116,13 @@ full screen windows with the [GLFW_CENTER_CURSOR](@ref GLFW_CENTER_CURSOR_hint)
 window hint.  It is enabled by default.
 
 
+@subsection news_33_hover Mouse cursor hover window attribute
+
+GLFW now supports polling whether the cursor is hovering over the window client
+area with the [GLFW_HOVERED](@ref GLFW_HOVERED_attrib) window attribute.  This
+attribute corresponds to the [cursor enter/leave](@ref cursor_enter) event.
+
+
 @subsection news_33_rawmotion Support for raw mouse motion
 
 GLFW now uses raw (unscaled and unaccelerated) mouse motion in disabled cursor

include/GLFW/glfw3.h

@@ -814,6 +814,10 @@ extern "C" {
  *  [window attribute](@ref GLFW_TRANSPARENT_FRAMEBUFFER_attrib).
  */
 #define GLFW_TRANSPARENT_FRAMEBUFFER 0x0002000A
+/*! @brief Mouse cursor hover window attribute.
+ *
+ *  Mouse cursor hover [window attribute](@ref GLFW_HOVERED_attrib).
+ */
 #define GLFW_HOVERED                0x0002000B
 
 /*! @brief Framebuffer bit depth hint.