fix mysql check duplicate metric
Merge pull request #899 from DataDog/fix-mysql-check

fix mysql check duplicate metric
Fix open_file_descriptors metric name
Typo
Merge pull request #904 from DataDog/fix_open_fd_name

Fix open_file_descriptors metric name
Adding release 5.0.0
Update CHANGELOG.md
Update CHANGELOG.md
add ability for AgentCheck instances to collect service check data
update the collector to collect service check data from agent checks
Merge pull request #910 from DataDog/service-checks

adding service checks api
Upgrade to cassandra 2.0.7 to fix travis tests
rename service_name to check_name

Services could have multiple checks
Merge remote-tracking branch 'origin/service-checks'
allow for float timestamps in service checks
fix service check test
add generated ids to service checks
allow service_check host_name be overridable, defaulting to agent host name
Merge branch 'service-checks'
update service check docstring