Merge pull request programminghistorian#1920 from programminghistoria…

…n/issue-1883

Add a warning to Introduction to Stylometry with Python (French and English); closes programminghistorian#1883

Merge pull request programminghistorian#1513 from programminghistoria…

…n/remove-python2-warning

Remove python2 warning

Merge pull request programminghistorian#1513 from programminghistoria…

…n/remove-python2-warning

Remove python2 warning

Merge pull request programminghistorian#1066 from programminghistoria…

…n/translation-topic-modelling

translate two authors's bios

Tweaks to Edinburgh Geoparser Lesson (programminghistorian#650)

* Changes title, abstract, introduction to note lang
Will close programminghistorian#647

* Changes burton.out.xml to 172172.out.xml
Will close programminghistorian#648 when merged