when jump backward (PREV), if the cursor isn't exactly in a header,  jump to the header that containt the cursor position first, instead to a previous neighbor
when jump backward (PREV), if the cursor isn't exactly in a header,  jump to the header that containt the cursor position first, instead to a previous neighbor

tzmgit/sublime-rst-completion,mgaitan/sublime-rst-completion,Kronuz/sublime-rst-completion,pestrickland/sublime-rst-completion,ericholscher/sublime-rst-completion,pestrickland/sublime-rst-completion,tzmgit/sublime-rst-completion,Kronuz/sublime-rst-completion