prometheus 0.14.0

Prometheus instrumentation library for Rust applications.
Documentation
---
name: Feature
about: The dawn of a new era.

---

**Related features:**
This feature resolves issue #???.

**Description of feature:**
A short description of the feature implemented.

**Implementation:**
Describe any pieces of the implementation that deserve further explanation.
Detail any gotchas, uncertainties, or open questions about the implementation.

**Checklist:**

The CI will check all of these, but you'll need to have done them:

* [ ] `cargo fmt -- --check` passes.
* [ ] `cargo +nightly clippy` has no warnings.
* [ ] `cargo test` passes.