Since Go 1.7, context is a standard package. Since Go 1.9, everything
that is provided by "x/net/context" is a couple of type aliases to
types in "context".
Many vendored packages still use x/net/context, so vendor entry remains
for now.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Instead of not adding experimental routes at all, fail with an explicit
message if the daemon is not running in experimental mode.
Added the `router.Experimental` which does this automatically.
Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
