Adopting dynamic spacing between steps for Vertical mode step indicator (#57)

* Adopting dynamic spacing between thr steps for Vertical mode step indicator

* JAzzy documentation for the new auto spacing feature

* Test fix for build failure

Co-authored-by: Badarinath Venkatnarayansetty <Badarinath_Venkatnarayansetty@intuit.com>

docs/Structs/StepAnimationOptionsKey.html

@@ -96,6 +96,9 @@
               <li class="nav-group-task">
                 <a href="../Structs/AnimatedCircle.html">AnimatedCircle</a>
               </li>
+              <li class="nav-group-task">
+                <a href="../Structs/AutoSpacingKey.html">AutoSpacingKey</a>
+              </li>
               <li class="nav-group-task">
                 <a href="../Structs/BoundsPreferenceKey.html">BoundsPreferenceKey</a>
               </li>
@@ -144,6 +147,9 @@
               <li class="nav-group-task">
                 <a href="../Structs/PitStopView.html">PitStopView</a>
               </li>
+              <li class="nav-group-task">
+                <a href="../Structs/PitstopHeightPreference.html">PitstopHeightPreference</a>
+              </li>
               <li class="nav-group-task">
                 <a href="../Structs/SpacingKey.html">SpacingKey</a>
               </li>
@@ -236,7 +242,7 @@
           </section>
         </section>
         <section id="footer">
-          <p>&copy; 2020 <a class="link" href="https://github.com/badrinathvm/StepperView" target="_blank" rel="external">badrinathvm</a>. All rights reserved. (Last updated: 2020-06-07)</p>
+          <p>&copy; 2020 <a class="link" href="https://github.com/badrinathvm/StepperView" target="_blank" rel="external">badrinathvm</a>. All rights reserved. (Last updated: 2020-06-13)</p>
           <p>Generated by <a class="link" href="https://github.com/realm/jazzy" target="_blank" rel="external">jazzy ♪♫ v0.13.3</a>, a <a class="link" href="https://realm.io" target="_blank" rel="external">Realm</a> project.</p>
         </section>
       </article>