Remove outdated issues from README.md

Dependencies

• [2] N3F3X7ZG Add simultaneous refresh to known issues
• [3] BOS2K4SQ Add signing changes feature to README
• [4] NCBEWRYE Initialize Repository

Change contents

• edit in README.md at line 29
  [3.126]→[3.126:227](∅→∅),[3.227]→[2.0:95](∅→∅)
  − - Not all actions refresh the appropriate views, manual refreshing is required in a number of places

  − - Multiple refreshes are sometimes executed simultaneously, which fail due to pristine locking