Merge pull request #2567 from astrofrog/fix-state-path-3d

Patch session files for new state 3d classes location

Author: astrofrog

glue/core/state_path_patches.txt

@@ -87,3 +87,6 @@ glue.viewers.table.qt.data_viewer.TableLayerArtist -> glue_qt.viewers.table.data
 glue.viewers.table.qt.data_viewer.TableViewer -> glue_qt.viewers.table.data_viewer.TableViewer
 glue.viewers.table.qt.TableLayerArtist -> glue_qt.viewers.table.TableLayerArtist
 glue.viewers.table.qt.TableViewer -> glue_qt.viewers.table.TableViewer
+glue_vispy_viewers.volume.layer_state.VolumeLayerState -> glue.viewers.volume3d.layer_state.VolumeLayerState
+glue_vispy_viewers.scatter.layer_state.ScatterLayerState -> glue.viewers.scatter3d.layer_state.ScatterLayerState
+glue_vispy_viewers.common.layer_state.VispyLayerState -> glue.viewers.common3d.layer_state.LayerState3D