cookbook 'datadog', '~> 2.3.0'

• [FEATURE] Add support for go_expvar check, #298 @hartfordfive
• [FEATURE] Allow a String or Hash when configuring Agent tags, #296 @martinisoft
• [FEATURE] Allow passing a tag_prefix to the handler, #285 @mstepniowski
• [FEATURE] Allow Agent config to control service behavior, #280 @hydrant25 & @miketheman
• [FEATURE] Add collect_function_metrics to postgres check, #278 @isaacdd
• [FEATURE] Add logging configuration overrides, #273 @SupermanScott & @miketheman
• [FEATURE] Add cassandra template versions, #263 @yannmh @sethrosenblum & @miketheman
• [FEATURE] Add sites options to iis check, #261, @cobusbernard & @miketheman
• [FEATURE] Add missing options to rabbitmq check, #232 @mattrobenolt & @miketheman
• [FEATURE] Add Agent config option for histogram_*, #272, @SupermanScott
• [FEATURE] Add support for commandstats in redis check, #266 @sethrosenblum
• [FEATURE] Add support for ssh_check check, #262 @wk8
• [FEATURE] Add support for custom MySQL queries, #259 @wk8
• [FEATURE] Add PHP-FPM recipe, #253 @jridgewell
• [FEATURE] Allow yum_repository resource to receive proxy options, #251 @RedWhiteMiko
• [FEATURE] Add Agent config option for statsd_metric_namespace, #250 @MiguelMoll
• [FEATURE] Allow use of Agent web_proxy config for Handler, #208 @datwiz
• [OPTIMIZE] Allow tags to be nil during Windows Agent install, #286 @rlaveycal
• [OPTIMIZE] Apply sensitive filter to template renders, #274 @martinisoft
• [DOCS] Correct redisdb example, #281 @iashwash
• [DOCS] Correct docker_daemon example, #276 @dlackty
• [MISC] Remove knife.rb file from repo, #299 @miketheman
• [MISC] Convert Kitchen Test to ChefSpec test for activemq, #295 @miketheman
• [MISC] Add Kitchen tests via CircleCI & kitchen-docker, @miketheman
• [MISC] Update Travis lint/spec tests to use ChefDK-supplied packages, @miketheman