Right now, this crate only provides wrappers around the channel types of
futures_channel.
The long term goal is to write and use custom internals for its channels, along with writing channels that are defined by 6 properties: - whether it is uni- or bidirectional - whether a sender gets notified when a message it has send, has been read - the number of unread messages that it can hold - the total number of messages that can be sent over it - the number of sender that it can have - the number of receiver that it can have