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>
`filters.ToParam()` and `filters.FromParam()` were deprecated in favor of
`filters.ToJSON()` and `filters.FromJSON()` in 065118390a,
but still used in various locations.
This patch replaces uses of `filters.ToParam()` and `filters.FromParam()` with
`filters.ToJSON()` and `filters.FromJSON()`.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
