\chapter{Methodology}

% sentiment calculation via vaderlib, write whole paragraph
% data sets as xml from archive.org
% answers in html -> strip html and remove code sections, not contribution to sentiment
% calc sentiment for answers

% about the change 
% https://meta.stackexchange.com/questions/314287/come-take-a-look-at-our-new-contributor-indicator?cb=1
% https://meta.stackexchange.com/questions/314472/what-are-the-exact-criteria-for-the-new-contributor-indicator-to-be-shown  ; change date = 2018-08-21T21:04:49.177
% new user indicator visible for 1 week ...
