Road to v1.0.0

[OrangeTux]

This is a meta issue to discuss and track progress to a v1.0.0.

The following breaking changes are being considered:

• [ ] #102 Return CallError if Call fails to unpack
• [ ] #136 Rewrite API for hooking into requests and responses. Implementation is unknown, maybe #168?
• [ ] #172 Add dataclasses for ChargingProfile and its constituents

Note that this list can be changed