Version 0.2.3

Resolve "Keyword Probability Slider"

Closes #150

See merge request !57

exponential scaling of probability values using the formula
0.0002 * 2^i for 0 <= i <= 10

- added author Boda Wen (implementation of MergeXplain & Progression for his bachelor thesis)
- extended Testsuite with all possible combinations of diagnosis engines
conflict search methods.

closes #133

Resolve "Activate Query Quality Measures KL, MPS, BME, EmCb in Protégé Plugin"

Closes #149 and #152

See merge request !50

Closes #152

possibly-faulty / correct axioms set

possibly-faulty / correct axioms set

Resolve "Add a feedback feature for error reports"

Closes #101

See merge request !48

Resolve "Implement toString() for all list items and list headers"

Closes #146

See merge request !46