Add support for Buefy 0.9.x

or: add hacks to continue supporting Buefy 0.8.x

..depending on your perspective

tailbone/templates/grids/buefy.mako

@@ -218,10 +218,15 @@
        :hoverable="true"
        :narrowed="true">
 
+      % if buefy_0_8:
       <template slot-scope="props">
+      % endif
         % for column in grid_columns:
             <b-table-column field="${column['field']}"
                             label="${column['label']}"
+                            % if not buefy_0_8:
+                            v-slot="props"
+                            % endif
                             :sortable="${json.dumps(column['sortable'])}"
                             % if grid.is_searchable(column['field']):
                             searchable
@@ -242,7 +247,12 @@
         % endfor
 
         % if grid.main_actions or grid.more_actions:
-            <b-table-column field="actions" label="Actions">
+            <b-table-column field="actions"
+                            label="Actions"
+                            % if not buefy_0_8:
+                            v-slot="props"
+                            % endif
+                            >
               ## TODO: we do not currently differentiate for "main vs. more"
               ## here, but ideally we would tuck "more" away in a drawer etc.
               % for action in grid.main_actions + grid.more_actions:
@@ -260,7 +270,9 @@
               % endfor
             </b-table-column>
         % endif
+      % if buefy_0_8:
       </template>
+      % endif
 
       <template #empty>
         <section class="section">