update Changes with recent fixes

Changes

@@ -16,10 +16,21 @@ Imager release history.  Older releases can be found in Changes.old
    more accessible to the "web" generation, also significantly updated
    and re-worked it.
 
+ - updated README's for the separately distributed modules to refer to
+   Imager::Install, and that they need -dev versions of packages
+   https://rt.cpan.org/Ticket/Display.html?id=81265
+
  - the JPEG test code now reports the compile-time library version
 
  - avoid a possible compiler optimization issue on CentOS 5.9 i386 by
    rearranging (and mildly optimizing) some code.
+   https://rt.cpan.org/Ticket/Display.html?id=83212
+
+ - fix a POD error in Imager::Fill (detected on new Pod-Simple)
+   https://rt.cpan.org/Ticket/Display.html?id=83434
+
+ - fix a broken link to Graphics::Magick
+   https://rt.cpan.org/Ticket/Display.html?id=82743
 
 Imager 0.94 - 15 Dec 2012
 =========================