v0.4.2 🌌

Changes

• Update setup.cfg @StFroese (#13)

Bugfix

• catch neg ts vals @StFroese (#12)

Negative TS values occur when the iminuit optimization does not lead to the global minimum, but is close to it. If the proposed upper limit has a log-likelihood value smaller than the value from the optimization, the TS value is negative.
Fixed by setting ts=0 if ts<0 and close to zero |ts|<1e-3 else an error is raised