Added deviance trace
Attention: Introduces a new name scheme.
- introduces weighted (or more standard) ICM (R implementations)
- more testing
profile likelihood uses now incremental start values for the scale parameter (starting with the isotonic regression for the Gumbel case) instead of using the isotonic regression always as start value (performance boost)
- modification of convergence constraint
- added boolean indicating convergence
- added additional argument max_repitions