Codespeed

* NEW 263: Added support for Django 2.1, drop support for Django 1.8
* NEW 255: Allow partial requests of timeline grid
* FIX 233: Ensure missing data points don’t lead to infinite loop
* FIX 242: Revision.tag field is not trimmed before insert
* FIX 250: All doesn't work after clicking None in comparison

* NEW 230: Added support for Django 1.11
* NEW 226: Added previous and next commit navigation to the changes view
* NEW 228: Customise the meta description to describe the URL
* NEW 224: Default banch is now configured in db, per project
* NEW 221: Added support for Django 1.9
* NEW 214: Added optional http basic authentication to results API calls
* NEW 209: Addeds the 'makeimage' service
* NEW 207: Commit tag saving features
* FIX 219: Made git tag identification more conservative
* FIX 212: Improved py3 compat by adding b'' literals
* FIX 212: Fix git tag error

* NEW 191: Django 1.7 and 1.8 support
* NEW 192: Initial Python 3.4 support
* NEW 199: str4d upgraded all javascript libraries. Most importantly jqPlot to 1.0.9 and jQuery to 1.12.3
* NEW 203: str4d implemented displaying of quartile and extrema bands on median benchmarks
* NEW 205: javierhonduco gave the application a more modern look

* NEW 169: nomeata added admin action to recalculate reports
* NEW 169: nomeata increased allowed length for benchmark names to 100 chars
* FIX 186: pepsiman fixed getting commit logs for non-default branches on mercurial
* FIX 170: Show infinite increase instead of "-"
* FIX: various admin fixes

* NEW 108: AlekSi made executable names uniques per project instead of globally
* NEW 148: staticfloat added the ability to set benchmark fields when saving results for a new benchmark
* NEW 149, 161: rchikhi and others fixed Django compatibility with versions 1.4-1.6
* NEW 158: smarr added initial travis configuration. Continuous integration is now enabled for Codespeed
* NEW 32: squiddy added option to control display of authors email address
* OPTIMIZATION 98: squiddy greatly reduced the number of necessary queries for getting comparison data, getting down the response time by an order of magnitude
* FIX 86: a8 fixed timeline plot failing when more than 4 series were selected
* FIX 130: alkino fixed migrations 0006 and 0012
* FIX 151: philangist migrated Github integration to API v3
* FIX 85: a8 fixed timeline view on IE

* NEW: Stefan added the possibility to name the default branch other than "default"
* NEW: Danilo added executable grouping by project
* NEW: Made default number of data points in the timeline plots configurable
* FIX: Frank fixed a lot of issues with the deploy examples
* FIX: Other numerous fixes