update the problem_report for pr-14 debugging part
Merge branch 'dev-kun'
the weight from MC and analytical calculation don't match
the MC within 1-st order diagram is consistent with direct integral;
a bug when using 0-order to renormalize.
integral inserted in self_consistent loop to compare Sigma, not succeed
yet
compare 0-order Sigma with Nikolay's
get the self-consistent loop with integration consistent with Nikolay's
Sigma_full.dat
find the right renormalizatin ratio for MC
test for change_gline_space, found some bugs
update the problem_report for test/pr-14
update the problem_report for test/pr-15
add stable_version.logfile
find a bug in check_k_conserve
find a bug in update_WeightCurrent
2-nd order diagram compared with Nikolay's answer, correct
Minor change