List group (#173)

* mvp list groups

* list group updates

* updated readme and list group to use css vars and icons

* added supgroups to story

* add list group test

* Expand Transition / Transitions Folder (#187)

* add expand transition to components folder

* expand readme

* test sorta

* test is dumb

* dummy component to test

* oops

* Add tests for capitalize first

* Rename v-transition-expand to expand-transition, inline util in test

* Update src/components/transitions/expand/expand-methods.ts

* Update src/components/transitions/expand/expand-methods.ts

* Update src/components/transitions/expand/expand-methods.ts

* Rename some more things, add storybook entry

* Use expand transition in detail drawer

* Improve readme

Co-authored-by: rijkvanzanten <rijkvanzanten@me.com>

* Refactor out groupable top level component + indentLevel prop

* Fix tests

* Update readme

Co-authored-by: rijkvanzanten <rijkvanzanten@me.com>

src/views/private-view/drawer-detail/drawer-detail.vue

@@ -8,9 +8,13 @@
 				{{ title }}
 			</div>
 		</button>
-		<div class="content" v-show="active">
-			<slot />
-		</div>
+		<transition-expand>
+			<div v-show="active">
+				<div class="content">
+					<slot />
+				</div>
+			</div>
+		</transition-expand>
 	</div>
 </template>