Merge pull request newrelic#205 from aharvey/remove-segment-literals

Make segment functions operate by pointer, not by value. PHP-1651

Merge pull request newrelic#187 from aharvey/refactor-get-content-length

Refactor the disparate places we get the content length into one.

Fix guide RecordCustomMetric call and run gofmt on guide examples (ne…

…wrelic#165)

Merge pull request newrelic#131 from will/1.9.0

Prepare for 1.9.0 release

Merge pull request newrelic#130 from rvanderwal/1.8.0

1.8.0

Merge pull request newrelic#113 from will/1.7.0

1.7.0

Merge pull request newrelic#110 from will/1.6.0

1.6.0

Merge pull request newrelic#96 from will/changelog

Improve changelog

Merge pull request newrelic#74 from will/1.4.0

1.4.0

Merge pull request newrelic#71 from will/1.3

1.3.0