allow to pass matrix function for high order methods
allow to pass matrix function for high order methods

smharper/openmc,shikhar413/openmc,walshjon/openmc,liangjg/openmc,smharper/openmc,mit-crpg/openmc,amandalund/openmc,amandalund/openmc,paulromano/openmc,smharper/openmc,liangjg/openmc,shikhar413/openmc,wbinventor/openmc,mit-crpg/openmc,walshjon/openmc,shikhar413/openmc,liangjg/openmc,walshjon/openmc,wbinventor/openmc,mit-crpg/openmc,smharper/openmc,amandalund/openmc,paulromano/openmc,wbinventor/openmc,wbinventor/openmc,mit-crpg/openmc,liangjg/openmc,paulromano/openmc,walshjon/openmc,paulromano/openmc,amandalund/openmc,shikhar413/openmc