Release 4.7.0

What's Changed

• [FIX] Rework GEO datasets model by @ales-erjavec in #318
• [ENH] OWSingleSampleScoring: add a new widget by @JakaKokosar in #324
• [ENH] Rework Gene Sets widget by @JakaKokosar in #325
• [ENH] Updated widget icons by @larazupan in #326
• [FIX] OWGeneSetEnrichment: fix icon path by @JakaKokosar in #327
• [FIX] OWSingleSampleScoring: fix icon path by @JakaKokosar in #328

Full Changelog: 4.6.0...4.7.0