allow for same file to be read in as ascii and output as binary
allow for same file to be read in as ascii and output as binary

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