CI: add changelog action

[junghans]

No description provided.

[codecov]

Codecov Report

Merging #553 into master will increase coverage by 5.5%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           master    #553     +/-   ##
========================================
+ Coverage    22.7%   28.2%   +5.5%     
========================================
  Files         124     124             
  Lines        7570    7576      +6     
========================================
+ Hits         1725    2144    +419     
+ Misses       5845    5432    -413     

Impacted Files	Coverage Δ
src/libcsg/nblist.cc	81.0% <0.0%> (-7.2%)	⬇️
src/libcsg/imcio.cc	81.6% <0.0%> (-1.0%)	⬇️
src/tools/csg_reupdate.cc	88.8% <0.0%> (-0.3%)	⬇️
include/votca/csg/topology.h	5.6% <0.0%> (+1.4%)	⬆️
src/tools/csg_resample.cc	54.2% <0.0%> (+1.4%)	⬆️
include/votca/csg/exclusionlist.h	31.8% <0.0%> (+1.4%)	⬆️
src/libcsg/nblistgrid.cc	88.4% <0.0%> (+2.0%)	⬆️
src/tools/csg_stat.cc	100.0% <0.0%> (+2.2%)	⬆️
src/libcsg/csgapplication.cc	72.9% <0.0%> (+3.0%)	⬆️
include/votca/csg/bead.h	4.6% <0.0%> (+3.1%)	⬆️
... and 8 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4ff6cc7...21bf4a8. Read the comment docs.