Release 0.4.0

What's Changed

• [FIX] owkaplanmeier: fix median line with multiple KMplot widgets on the canvas by @JakaKokosar in #24
• [FIX] owkaplanmeier: hide legend on empty input by @JakaKokosar in #25
• [ENH] Survival tables, CoxRegression model and learner by @JakaKokosar in #27
• [FIX] Various bug fixes and improvements by @JakaKokosar in #28
• [ENH] Detect and omit missing rows by @JakaKokosar in #29
• [ENH] owcohorts: add new widget by @JakaKokosar in #30
• [ENH] Set valid types for survival and group variables in DomainModel by @JakaKokosar in #31
• New icons by @larazupan in #32
• [ENH] move survival annotations to attributes of columns by @JakaKokosar in #33
• New As Survival Data icon by @larazupan in #35
• [FIX] owassurvivaldata: fix variable selection on widget startup by @JakaKokosar in #34
• owcohorts: if only 2 unique values found don't split on whole array by @JakaKokosar in #36
• [ENH] owranksurvivalfeatures: minor UI improvements by @JakaKokosar in #37
• [ENH] owstepwisecoxregression: minor UI changes by @JakaKokosar in #38
• [ENH] owkaplanmeier: If input domain contains variable 'Cohorts' autoselect it by @JakaKokosar in #39
• [FIX] owkaplanmeier: fix crashing legend by @JakaKokosar in #41
• [ENH] owkaplanmeier: add annotated data output by @JakaKokosar in #43
• [ENH] Simplify conversion of Table to DataFrame by @JakaKokosar in #44
• [ENH] use new interface for testing and scoring learners by @JakaKokosar in #42
• [FIX] owcohorts: transform domain before computing by @JakaKokosar in #45

Full Changelog: 0.3.0...0.4.0