add test for xls and xlsx
add ods test and file
update loffice to 4.1
update loffice to 4.1(realy)
update test for Travis
add commentaries
Test comments
debug travis
merge
test travis
test travis
test travis
add xls/xlsx/ods loffice option
add odt and options for all types
add pptx
add ppt and odp
rename cluestr to anyfetch and fix some bugs
add server.close()
add rtf
add test for unvalid extension