The first issue involved copied users which would lead to user updates
causing faster evictions of the cache than was expected.
The second issue involved users that weren't bound to an internal
lifetime eviction policy. These users would not get evicted.
For example, a user without mutual guilds or being part of the internal
cache in general (messages, DMs) would never end up being evicted for
some strange reason. To handle this case, store_user would get a
counterpart named create_user which would create a user without
potentially storing them in the cache. That way only users with a
bound lifetime within the library would be stored.
This is a breaking change.
This does the following transformations, assuming `asset` represents
an asset type.
Object.is_asset_animated() => Object.asset.is_animated()
Object.asset => Object.asset.key
Object.asset_url => Object.asset_url
Object.asset_url_as => Object.asset.replace(...)
Since the asset type now requires a key (or hash, if you will),
Emoji had to be flattened similar to how Attachment was done since
these assets are keyed solely ID.
Emoji.url (Asset) => Emoji.url (str)
Emoji.url_as => removed
Emoji.url.read => Emoji.read
Emoji.url.save => Emoji.save
This transformation was also done to PartialEmoji.
This unfortunately required splitting the types into two. This led to
a lot of unfortunate code duplication that I didn't really enjoy
writing.
The new design allows users to pass an authentication token to make
webhook requests without the webhook token and allows to finally
edit the webhook channel.
The new design also uses a contextvar to store rate limiting
information so multiple instances or recreating instances no longer
clears the ratelimiting state since it's now essentially a "global"
object.
Closes#6525, closes#6662, closes#2509, closes#1761
