Test difftool for convert word, excel and other filers to text format understandable to GitHub
Install ExcelMerge
add to .get/config
[diff]
tool=unMerge
[difftool "unMerge"]
cmd = \"C:/Users/tkachenko/Documents/GitHub/testExel/diff.bat\" \"$LOCAL\" \"$REMOTE\"
[alias]
windiff = difftool unMerge
.xlsx - ExcelMerge other text formats - WinMerge