Upstream merge

[litinoveweedle]

• added build chain
• fixed cli args dependencies (port + tcp bug etc.)
• fixed Node table Response bug
• added reconnect function to serial/tcp source
• added TCP keepalive support
• added persistence JSON data store (for gateways and nodes info)
• added new event to report detected gateways and nodes (persistence event)
• changed existing power report event format - BREAKING change, both reports needs to be correlated in the higher layer)
• added full fledged CHANGELOG.md (instead of Changes.md)
• updated/modified cargo

[litinoveweedle]

As discussed in #18 I did implemented agreed changes, there are still probably some things missing

[litinoveweedle]

Please check that this is to your standards:

persistent_state.rs:

#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
pub struct PersistentStateEvent {
    pub event_type: String,
    pub gateways: BTreeMap<GatewayID, PersistentStateEventGateway>,
    pub nodes: BTreeMap<GatewayID, BTreeMap<NodeID, PersistentStateEventNode>>,
}

impl From<&PersistentState> for PersistentStateEvent {
    fn from(item: &PersistentState) -> Self {
        let event_type = "infrastructure_report".to_string();

[litinoveweedle]

I can confirm, that it compiles and run in the observe raising 'infrastructure_report' events, I will need to test it also during day for 'power_report', but before discussed changes it was tested on two installations for several days without problems.

[willglynn]

Thanks! Closing in favor of #21.