Revert "Release 1.2.0"

This reverts commit 5636758.

Because there is still a blocking issue according to #859 (comment)

Author: PowerKiKi

.github/PULL_REQUEST_TEMPLATE.md

@@ -9,4 +9,4 @@ Fixes # (issue)
 - [ ] My CI is :green_circle:
 - [ ] I have covered by unit tests my new code (check build/coverage for coverage report)
 - [ ] I have updated the [documentation](https://github.com/PHPOffice/PHPPresentation/tree/develop/docs) to describe the changes
-- [ ] I have updated the [changelog](https://github.com/PHPOffice/PHPPresentation/blob/develop/docs/changes/1.3.0.md)
+- [ ] I have updated the [changelog](https://github.com/PHPOffice/PHPPresentation/blob/develop/docs/changes/1.1.0.md)

mkdocs.yml

@@ -52,7 +52,7 @@ nav:
       - Introduction: 'usage/slides/introduction.md'
       - Animations: 'usage/slides/animation.md'
       - Layouts: 'usage/slides/layout.md'
-    - Shapes:
+    - Shapes: 
       - Introduction: 'usage/shapes/introduction.md'
       - AutoShape: 'usage/shapes/autoshape.md'
       - Chart: 'usage/shapes/chart.md'
@@ -67,7 +67,7 @@ nav:
   - FAQ: 'faq.md'
   - Credits: 'credits.md'
   - Releases:
-      - '1.2.0': 'changes/1.2.0.md'
+      - '1.2.0 (WIP)': 'changes/1.2.0.md'
       - '1.1.0': 'changes/1.1.0.md'
       - '1.0.0': 'changes/1.0.0.md'
       - '0.9.0': 'changes/0.9.0.md'