Mention openmc.capi -> openmc.lib name change in release notes
Mention openmc.capi -> openmc.lib name change in release notes

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