Add Python distribution-related directories to .gitignore
Add Python distribution-related directories to .gitignore

johnnyliu27/openmc,liangjg/openmc,samuelshaner/openmc,shikhar413/openmc,wbinventor/openmc,liangjg/openmc,lilulu/openmc,amandalund/openmc,liangjg/openmc,wbinventor/openmc,smharper/openmc,kellyrowland/openmc,mjlong/openmc,mit-crpg/openmc,shikhar413/openmc,samuelshaner/openmc,lilulu/openmc,mit-crpg/openmc,walshjon/openmc,walshjon/openmc,bhermanmit/openmc,samuelshaner/openmc,paulromano/openmc,mit-crpg/openmc,walshjon/openmc,paulromano/openmc,shikhar413/openmc,shikhar413/openmc,lilulu/openmc,amandalund/openmc,samuelshaner/openmc,liangjg/openmc,johnnyliu27/openmc,amandalund/openmc,wbinventor/openmc,amandalund/openmc,smharper/openmc,smharper/openmc,mit-crpg/openmc,kellyrowland/openmc,paulromano/openmc,paulromano/openmc,johnnyliu27/openmc,bhermanmit/openmc,wbinventor/openmc,smharper/openmc,mjlong/openmc,johnnyliu27/openmc,walshjon/openmc