Use percona/go-mysql (with new improved fingerprinter) and go-test/test (IsDeeply and Dump) in qan/. Fix false-positive test failures by sorting results.
Check for mixed rate limits in qan.Worker.
Remove dead code.
Merge branch 'release' into use-go-mysql-pkgs
Update go-mysql dep.
Fix strconv.ParseFloat warning. Skip metrics with no value.
Don't warn about MySQL metrics with no value, just skip them.
Improve error msg and disable when InnoDB or user stats fail to enable.
Update go-mysql dep.
Update qan.Worker for new go-mysql.EventAggregator and make fingerprinting crash-proof.
Update go-mysql dep.
Merge branch 'release' into use-go-mysql-pkgs

Conflicts:
	qan/qan_test.go
Update changelog with more 1.0.9 changes.
More changelog entries.
Merge pull request #95 from percona/use-go-mysql-pkgs

Use percona/go-mysql and go-test/test