Datadog

* [BUGFIX] Dogshell: Fix `UnicodeError` exceptions when a timeboard name contains non ascii characters, [140][]
* [BUGFIX] DogStatsD: Support unicode characters in tags, [132][], [152][]
* [BUGFIX] ThreadStats: Fix `RuntimeError` exceptions on flush caused by an unsafe thread operation, [143][], [151][] (thanks [leozc][])
* [FEATURE] API: Add `delete` method to `Event` resource, [145][]
* [IMPROVEMENT] DogStatsD: Have `timed` context manager to return itself, [147][] (thanks [ross][])

* [BUGFIX] API: Do not raise on hostname resolution failures, [106][]
* [FEATURE] DogStatsD: Allow to dynamically use default route as a StatsD host, [134][]
* [IMPROVEMENT] API: Enhance compatibility with Google App Engine, support `urlfetch` as a HTTP library [106][]

* [BUGFIX] Dogshell: Print usage when no argument is given on Python 3, [123][]
* [BUGFIX] DogStatsD: Do not modify metric-level `tags` parameters when `constant_tags` is set, [94][] (thanks [steven-liu][])
* [BUGFIX] DogStatsD: Fix thread-safety of the `[timed][]` decorator, [126][] (thanks [mgood][])
* [BUGFIX] ThreadStats: Do not modify metric-level `tags` parameters when `constant_tags` is set, [94][], [117][] (thanks [steven-liu][])
* [FEATURE] Dogshell: Add an `alert_type` option for `event post`, [120][] (thanks [drstevens][])
* [FEATURE] DogStatD: Set constant tags from `DATADOG_TAGS` environment variable, [114][] (thanks [ewdurbin][] )
* [FEATURE] DogStatsD: Support namespace, [118][]
* [FEATURE] ThreadStats: Set constant tags from `DATADOG_TAGS` environment variable, [114][] (thanks [ewdurbin][] )
* [FEATURE] ThreadStats: Support namespace, [118][]
* [IMPROVEMENT] API: Support real numerical data types in `Metrics`, [103][]
* [IMPROVEMENT] Dogshell: Attach hostname by default to event and metric posts, [122][]
* [IMPROVEMENT] DogStatsD: Discard `None` values, [119][] (thanks [dcrosta][])
* [IMPROVEMENT] DogStatsD: Import from top level, [105][]
* [IMPROVEMENT] Dogwrap: Trim output and update event format, [104][] (thanks [gnarf][])
* [OTHER] API: Adjust the documentation, [96][], [101][], [110][], [111][] (thanks [aristiden7o][], [emad][], [aknuds1][], [meawoppl][])
* [OTHER] Dogshell: Update misleading help message for `event stream`, [124][]

* [BUGFIX] Fix typo in Dogshell breaking the Timeboard `pull_all` method, [92][]
* [FEATURE] Enhance `constant_tags` support to ThreadStats and Statsd events, [90][] (thanks [jofusa][])
* [FEATURE] New CRUD User API, [89][]
* [OTHER] Fix Dogwrap documentation output typo, [87][] (thanks [gnarf][])

* [FEATURE] Option to time in ms with `statsd`, [78][] (thanks [g--][])
* [FEATURE] Option to unmute `api` ApiError exceptions, [76][]
* [OTHER] Use `simplejson` with Python 3.x, [83][]

* [FEATURE] Constant tags client option to append tags to every submitted metrics, [68][] (thanks [jofusa][])
* [FEATURE] Embeddable graphs API, [62][]
* [FEATURE] Optional metric name for the timed decorator, [71][] (thanks [clokep][])
* [IMPROVEMENT] Option to use the verify parameter in requests to configure a ca certificates file or to disable verification, [70][] (thanks [ogst][])