Is your feature request related to a problem? Please describe.

I think people may prefer to have the ability to cancel their requests at any time.

Describe the solution you'd like

Add context.Context to every func/method that involves network operations.

Describe alternatives you've considered

N/A

Additional context

This isn't a difficult feature to imple

For now, there is no method which does handle SLOWMODE_WAIT error automatically.
It would be great to add chain parameter to set handler and retry request by default.

d := sender.Resolve("chat")
d.OnSlowMode(slowmode.Wait).Text(ctx, "Disable slow mode, please!") // same as call without OnSlowMode, Wait by default
d.OnSlowMode(slowmode.Err).Text(ctx, "Disable slow mode, please!") // re