Added alert functionality, starting module restructure

docs/v2/DEVLOG.md

@@ -364,3 +364,5 @@
 - Tested on mobile, works better.
 - Minor `tabs` update for `:first-of-type` and `:last-of-type` selectors. This update should fix square top-right corners for single collapses.
 - Deployed live demo.
+- New module restructure: all modules will be moved to core, some merges might have to be applied (check issue #14). Restructure was applied as follows:
+  - Added the functionality of the new `alert` module to `contextual`. Includes mixin `make-alert-alt-color` for different `alert` color variants.

docs/v2/index.html

@@ -130,6 +130,10 @@
 }</pre>
 <br>
           </div>
+          <div class="alert">
+            <h3>This is an alert</h3>
+            <p>Alerts are important</p>
+          </div>
         </div>
       </div>
       <div class="row">
@@ -543,7 +547,6 @@
             <div class="spinner-donut"></div>
             <div class="spinner-donut secondary"></div>
             <div class="spinner-donut tertiary"></div>
-          </div>
         </div>
       </div>
     </div>