new unicode#Digraph() function
updated documentation
fix some formatting
somre more error handling
Cache unicode data in VimL format
small formating fix
make sure to delete VimL cache for unicode data, when forcing download
updated documentation
check for patch 7.3.713
better check for patch 7.3.713
udpated README
allow several digraphs to returned by digraph function
better performance when searching for digraph with certain decimal value
make filter() logic easier
check modification time of cache file
add comment to unicode cache file
mostly reformatting and commenting of code
fix broken startup script
All configuration variables have a common g:Unicode prefix
updated documentation