Dtale

* testing of hostname returned by `socket.gethostname`, use 'localhost' if it fails
* removal of flask dev server banner when running in production environments
* better handling of long strings in wordclouds
* [43](https://github.com/man-group/dtale/issues/43): only show timeseries correlations if datetime columns exist with multiple values per date

* updated versions of packages in yarn.lock due to issue with chart.js box & whisker plots

* [40](https://github.com/man-group/dtale/issues/40): loading initial chart as non-line in chart builder
* [41](https://github.com/man-group/dtale/issues/41): double clicking cells in correlation grid for scatter will cause chart not to display
* "Open Popup" button for ipython iframes
* column width resizing on sorting
* additional int/float descriptors (sum, median, mode, var, sem, skew, kurt)
* wordcloud chart type

* bugfix for url display when running from command-line

* charts integration
* the ability to look at data in line, bar, stacked bar & pie charts
* the ability to group & aggregate data within the charts
* direct ipython iframes to correlations & charts pages with pre-selected inputs
* the ability to access instances from code by data id `dtale.get_instance(data_id)`
* view all active data instances `dtale.instances()`

* conversion of new flask instance for each `dtale.show` call to serving all data associated with one parent process under the same flask instance unless otherwise specified by the user (the `force` parameter)