The event types have been recently changed to be exported types which
wasn't reflected in the new pod discovery.

Correctly identify no-op appends if the value is NaN

Add missing logging of out-of-order samples

k8s pod discovery

Fix same style issues

It did not test the returned error so far.
Also, add tests for the NaN case broken before
https://github.com/prometheus/common/pull/40

storage/remote: Spawn not more than "maxConcurrentSends" goroutines.

Write tests to include testing determinancy of various slice orders; ensure that container order is deterministic

Add one label named for each port name, mapping it to port number; add corresponding tests; prefix port list label with a comma

This requires an updating of the vendored commen.model package, which
I will do once https://github.com/prometheus/common/pull/40 is merged.

So far, out-of-order samples during rule evaluation were not logged,
and neither scrape health samples. The latter are unlikely to cause
any errors. That's why I'm logging them always now. (It's alway highly
irregular should it happen.) For rules, I have used the same plumbing
as for samples, just with a different wording in the message to mark
them as a result of rule evaluation.

Update vendoring of golang.org/x/net/context/...

This should fix problems with hung scrapes.

Pull targets and rules out of status into their own tab

I got feedback from different sources about rules and targets being
too heavy in the status tab if their are lots of them.

This change also allows for more fine-granular locking.

effect -> affect

Support time range in /api/v1/series endpoint.

This adds optional "start" and "end" form values that may be used to
restrict the time range of returned series.

Fixes https://github.com/prometheus/prometheus/issues/1542

(trivial) fix several minor golint style issues

Fuzz parsers

Add unittest for using a metric for thresholds with group_left.

[discovery][dns] move dns to own package

Make version informations consistent between prometheus components

Fix CircleCI flanky go get