:GeDoc net/http         --> opens a "gedoc" split
    :GeDoc fmt Printf       --> + jump to specific identifier
                                (note: full TAB-completion)
    :GeDoc \html_template   --> + resolve import alias like:
                                import html_template "html/template"
    zM                --> fold all
    zo                --> unfold current
    zc                --> fold current
    Ctrl-]            --> "follow link under cursor"
    Ctrl-A            --> show all! (i.e. unexported too)

Enable goimports to automatically insert import paths instead of gofmt:

let g:go_fmt_command = "goimports"