2.3.0

• Support python installation from Windows Store (#14)
• Changed virtualenv version installed by default from 16.7.9 to 20.4.2
  (because only recent versions could work correctly with python installed from Windows Store)
• Add minimal required virtualenv check: by defautl it's virtualenv 16 (to not fail previously working environments).
  But it is recommended to use at least 20.0.11 (compatible with Windows Store python). V20 changes pip installation
  strategy in environment to the same version as bundled with virtualenv instead of always downloading new pip (which increase builds stability).
  Configured with python.minVirtualenvVersion.
• Fix up-to-date check in pipInstall task for VCS modules (the latest pip changed freeze output syntax)
• Hide passwords in logs for pip extra index repository urls with credentials (extraIndexUrls config) (#12)
• Add general logged command cleaning mechanism to Python object for plugin authors (Pip object uses it for passwords hiding)