Dtale

* [50](https://github.com/man-group/dtale/issues/50): updates to rolling correlation functionality

* [47](https://github.com/man-group/dtale/issues/47): selection of multiple columns for y-axis
* updated histogram bin selection to be an input box for full customization
* better display of timestamps in axis ticks for charts
* sorting of bar charts by y-axis
* [48](https://github.com/man-group/dtale/issues/48): scatter charts in chart builder
* "nunique" added to list of aggregations
* turned on "threaded=True" for app.run to avoid hanging popups
* [45](https://github.com/man-group/dtale/issues/45): rolling computations as aggregations
* Y-Axis editor

* test whether filters entered will return no data and block the user from apply those
* allow for group values of type int or float to be displayed in charts popup
* timeseries correlation values which return 'nan' will be replaced by zero for chart purposes
* update 'distribution' to 'series' on charts so that missing dates will not show up as ticks
* added "fork on github" flag for demo version & links to github/docs on "About" popup
* limited lz4 to <= 2.2.1 in python 27-3 since latest version is no longer supported

* 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