* feat(gravatar): add `gravatar.params` config option BREAKING CHANGE: The `gravatar.default` config option has been removed. Please use `gravatar.params` instead. The default value for `gravatar.params` is now `"d=mp&s=240"`. Signed-off-by: qwqcode <qwqcode@gmail.com> * add docs and fix sidebar Signed-off-by: qwqcode <qwqcode@gmail.com> --------- Signed-off-by: qwqcode <qwqcode@gmail.com>