added memoizer. removed some curve usage
removed another usage of the curve class
fix classical
fix conditional loss ratio
Merge pull request #50 from gem/fix-lrem

Strictly increasing vulnerability function in classical calculator
fix sampling
Merge pull request #51 from gem/fix-sampling

fix sampling in lognormaldistribution when mean = 0, covs = 0
updated tests
fix conditional loss ratio in boundary case
Merge pull request #52 from gem/update-event-based

Update Event Based algorithm
packager.sh updated to support devtest action
add nose as Build-Depends
packager.sh: test run customized and retrieve of test results added
packager.sh: development log removed
add python-coverage Build-Deps
removed unused methods
removed range clip
removed ordinate diffs
ordinate_for removed
remove curve module