build+ci: switch to python3
Also in this commit:
* Sync CI scripts with other projects
* Sync sphinx_build waf tool with ndn-cxx
* Modernize docs/conf.py
* Replace redmine_issue extension with sphinx.ext.extlinks
* Fix typo in docs/doxygen.conf.in
* Improve README.md
Refs: #5095
Change-Id: Iee05500f907442dd7cb3e41bd613beef7461dab4
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 0000000..7345b69
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1 @@
+<davidepesa@gmail.com> <davide.pesavento@lip6.fr>