This crate implements the base to build a [Matrix](https://matrix.org/) client
library.
## Crate feature flags
The following crate feature flags are available:
- `encryption`: Enables end-to-end encryption support in the library.
- `qrcode`: Enables QRcode generation and reading code.
- `testing`: Provides facilities and functions for tests, in particular for
integration testing store implementations. ATTENTION: do not ever use outside
of tests, we do not provide any stability warantees on these, these are merely
helpers. If you find you _need_ any function provided here outside of tests,
please open a Github Issue and inform us about your use case for us to
consider.