StrongEd: release version 4.63

This is release version 4.63 of StrongEd, the RISC OS text editor.

Changes from version 4.62
-------------------------

Bugs fixed:
 * RO4 sprite problems fixed; smarticons work properly again and wrapped-line markers are back on RO4.
 * \n removed from advanced search/replace window.

Improvements:
 * History added to Goto dialogue box.
 * Option to replace spaces with hard spaces in filenames.
 * Desktop files are loaded into Obey mode
 * Updated website from info box to new site at the Iconbar.
 * New WML mode.
 * Updated Perl mode.