Update or remove version numbers, update copyright years

Note: one goal is to have to edit fewer version numbers in source
files for each release.

We may be able to generate some files by the build procedure (CMake)
to avoid editing them in the future (1.5.0 or later).

CREDITS.txt

@@ -1,5 +1,5 @@
-CREDITS.txt - Fast Light Tool Kit (FLTK) Version 1.4.0
+CREDITS.txt - Fast Light Tool Kit (FLTK)
-------------------------------------------------------
+----------------------------------------
 
   This file lists the people responsible for the toolkit you are
   now using.  If you've been looking for your name in lights

documentation/README.txt

@@ -18,7 +18,7 @@ Online Documentation (Latest Release):
 A documentation version is available online at the FLTK web site,
 along with the PDF version of the manual. The docs on the web site
 are usually somewhat older (latest release). The active development
-version (currently 1.4.0) is updated from time to time.
+version is updated from time to time.
 
 Use this URL to find the current online documentation:
 

documentation/src/preface.dox

@@ -2,9 +2,9 @@
 
  \page preface Preface
 
-This manual describes the Fast Light Tool Kit ("FLTK")
+This manual describes the Fast Light Tool Kit ("FLTK") version 1.4.0,
-version 1.4.0, a C++ Graphical User Interface
+a C++ Graphical User Interface ("GUI") toolkit for UNIX, Microsoft Windows,
-("GUI") toolkit for UNIX, Microsoft Windows and Apple macOS.
+and Apple macOS.
 
 Version 1.4.0 introduces support for a new windowing system under
 Linux/Unix: Wayland. FLTK applications under Linux/Unix run unchanged

fltk-options/fltk-options.plist

@@ -13,7 +13,7 @@
 	<key>CFBundleDevelopmentRegion</key>
 	<string>English</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright 2023 by Bill Spitzak and others</string>
+	<string>Copyright 2023-2024 by Bill Spitzak and others</string>
 	<key>CFAppleHelpAnchor</key>
 	<string>help</string>
 	<key>CFBundleName</key>
@@ -27,7 +27,7 @@
 	<key>CFBundleShortVersionString</key>
 	<string>1.4.0</string>
 	<key>CFBundleGetInfoString</key>
-	<string>1.4.0, Copyright 2023 by Bill Spitzak and others</string>
+	<string>1.4.0, Copyright 2023-2024 by Bill Spitzak and others</string>
 	<key>NSHighResolutionCapable</key>
 	<true/>
 </dict>

fluid/fluid.plist

@@ -13,7 +13,7 @@
 	<key>CFBundleDevelopmentRegion</key>
 	<string>English</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright 1998-2021 by Bill Spitzak and others</string>
+	<string>Copyright 1998-2024 by Bill Spitzak and others</string>
 	<key>CFAppleHelpAnchor</key>
 	<string>help</string>
 	<key>CFBundleName</key>
@@ -27,7 +27,7 @@
 	<key>CFBundleShortVersionString</key>
 	<string>1.4.0</string>
 	<key>CFBundleGetInfoString</key>
-	<string>1.4.0, Copyright 1998-2021 by Bill Spitzak and others</string>
+	<string>1.4.0, Copyright 1998-2024 by Bill Spitzak and others</string>
 	<key>CFBundleDocumentTypes</key>
 	<array>
 		<dict>

test/mac-resources/editor.plist

@@ -36,7 +36,7 @@
 	<key>CFBundleVersion</key>
 	<string>1.0</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright 1998-2021 by Bill Spitzak and others.</string>
+	<string>Copyright 1998-2024 by Bill Spitzak and others.</string>
 	<key>NSHighResolutionCapable</key>
 	<true/>
 </dict>