prometheus 0.11.0

Prometheus instrumentation library for Rust applications.
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# Changelog

## 0.11.0

- Improvement: Switch to more efficient `fd_count()` for `process_open_fds` (#357).

- API change: Change Integer Counter type from AtomicI64 to AtomicU64 (#365).

- Internal change: Update dependencies.

## 0.10.0

- Improvement: Use different generic parameters for name and help at metric construction (#324).

- Bug fix: Error instead of panic when constructing histogram with unequal label key and label value length (#326).

- Bug fix: Return `Error::AlreadyReg` on duplicate collector registration (#333).

- Bug fix: Make Histogram::observe atomic across collects (#314).

- Internal change: Replace spin with parking_lot (#318).

- Internal change: Optimize metric formatting (#327).

- Internal change: Update parking_lot and procfs dependencies (#337).

## 0.9.0

- Add: Implement `encode` function for summary type metrics. 

## 0.8.0

- Add: Reset Counters (#261)

- Add: Discard Histogram timers (#257)

- Add: `observe_closure_duration` for better observing closure duration for local histogram (#296)

- Fix a bug that global labels are not handled correctly (#269)

- Improve linear bucket accuracy by avoiding accumulating error (#276)

- Internal change: Use [thiserror](https://docs.rs/thiserror) to generate the error structure (#285)

- Internal change: Switch from procinfo to [procfs](https://docs.rs/procfs) (#290)

- Internal change: Update to newer dependencies

## 0.7.0

- Provide immutable interface for local counters.

## 0.6.1

- Fix compile error when ProtoBuf feature is not enabled (#240).

## 0.6.0

- Add: Expose the default registry (#231).

- Add: Support common namespace prefix and common labels (#233).

## 0.5.0

- Change: Added TLS and BasicAuthentication support to `push` client.

## 0.4.2

- Change: Update to use protobuf 2.0.

## 0.4.1

- Change: `(Local)(Int)Counter.inc_by` only panics in debug build if the given value is < 0 (#168).

## 0.4.0

- Add: Provides `IntCounter`, `IntCounterVec`, `IntGauge`, `IntGaugeVec`, `LocalIntCounter`, `LocalIntCounterVec` for better performance when metric values are all integers (#158).

- Change: When the given value is < 0, `(Local)Counter.inc_by` no longer return errors, instead it will panic (#156).

- Improve performance (#161).