More config for CreateCommand, add various methods

Adds multiple configurations to the command builder, and adds methods
to various structs.

Context::get_current_user is a shortcut to retrieve the current user
from the cache.

Message::get_member retrieves the member object of the message, if sent
in a guild. Message::is_private checks if the message was sent in a
Group or PrivateChannel.

User::member retrieves the user's member object in a guild by Id;

Adds 6 configurations to the command builder:

- dm_only: whether the command can only be used in direct messages;
- guild_only: whether the command can only be used in guilds;
- help_available: whether the command should be displayed in the help
  list;
- max_args: specify the maximum number of arguments a command must be
  given;
- min_args: specify the minimum number of arguments a command must be
  given;
- required_permissions: the permissions a member must have to be able
  to use the command;

1 files changed, 1 insertions, 1 deletions

diff --git a/src/model/utils.rs b/src/model/utils.rs
index e4b2445..28f5874 100644
--- a/src/model/utils.rs
+++ b/src/model/utils.rs
@@ -260,7 +260,7 @@ pub fn remove(map: &mut BTreeMap<String, Value>, key: &str) -> Result<Value> {
 }
 
 #[doc(hidden)]
-#[cfg(all(feature = "cache", feature="methods"))]
+#[cfg(all(feature="cache", feature="methods"))]
 pub fn user_has_perms(channel_id: ChannelId,
                       mut permissions: Permissions)
                       -> Result<bool> {