dmarmugi

Hi, Looking at the [Content-Type header](https://github.com/prometheus/client_python/blob/30f83196ac1f1a1a2626da9d724d83955aff79b1/prometheus_client/openmetrics/exposition.py#L6) ```python CONTENT_TYPE_LATEST = 'application/openmetrics-text; version=0.0.1; charset=utf-8' ``` The `version=0.0.1` should be bumped. Looking at [the spec](https://github.com/OpenObservability/OpenMetrics/blob/main/specification/OpenMetrics.md#overall-structure): > The content type MUST be: application/openmetrics-text; version=1.0.0;...

Undocumented Label Collision Potential in /promregatorMetrics

7

## Environment Promregator, running as Jar, on CF, as per [HA Setup](https://github.com/promregator/promregator/blob/93a37994e9c5d879ac23c16f1b14f3877ecd7a2a/docs/ha-setup.md) ## Summary / Problem Statement The `/promregatorMetrics` endpoint returns a handful of metrics which contain labels for "target"...