Rewrite lines_of_code script to not to rely on ROOT
|Status:||Resolved||Start date:||06 Sep 2018|
|Target version:||Sprint 38|
Number of lines of code is the most demonstrated plot in our presentations.
We need to rewrite lines_of_code.py script, which is used to generate plot, to
- Remove ROOT from dependencies, swtich to matplotlib
- Make it Python3
- Split it on two parts: build of commit info database, and plotting itself