David Ramos

See https://rustsec.org/advisories/RUSTSEC-2023-0071.html and RustCrypto/RSA#19. Once a fix is available, this crate should update the minimum required version of `rsa` in [`Cargo.toml`](https://github.com/ramosbugs/openidconnect-rs/blob/6735ecb1c84899ca1ca84aefd32c4b2da3f75548/Cargo.toml#L47).

Expose cause of initialization errors

4

**Is your feature request related to a problem? Please describe.** The `Client` provides an [`initialized_async`](https://docs.rs/launchdarkly-server-sdk/1.0.0-beta.2/launchdarkly_server_sdk/struct.Client.html#method.initialized_async) method to wait until it has completed initialization. The function returns false if an error...

Return waitable future from Client::flush()

2

**Is your feature request related to a problem? Please describe.** Currently, `Client` provides a [`flush`](https://docs.rs/launchdarkly-server-sdk/1.0.0-beta.2/launchdarkly_server_sdk/struct.Client.html#method.flush) method that can be used to flush pending analytics events. However, there is no way...