Merge branch 'dev'

implemented hiding cursor on input
use vim-flavor 1.1
Merge branch 'vim-flavor'
move test files to test/ directory
Merge branch 'vim-flavor'
fix restoring guicursor option

thanks @haya14busa
add about <Plug>(clever-f-reset)
Merge branch 'dev'
about timeout and highlighting character
improve character highlighting
update document for highlighting improvement and tiny typo fixes