0.108.0 Beta release notes (#12592)

* Initial setup for blog release post 0.108

* Fe release 0.108 (#12611)

* Add frontend release notes

* Update 2020-04-08-release-108.markdown

* Some more update to release blog

* Add breaking changes descriptions for 108

* Small improvements to the breaking changes

* Add clean before-after separator

* Update source/_posts/2020-04-08-release-108.markdown

Co-Authored-By: Zack Arnett <arnett.zackary@gmail.com>

* Update release notes with latest beta cut

Co-authored-by: Bram Kragten <mail@bramkragten.nl>
Co-authored-by: cogneato <cogneato@gmail.com>
Co-authored-by: Zack Arnett <arnett.zackary@gmail.com>

_config.yml

@@ -100,9 +100,9 @@ social:
 
 # Home Assistant release details
 current_major_version: 0
-current_minor_version: 107
-current_patch_version: 7
-date_released: 2020-03-25
+current_minor_version: 108
+current_patch_version: 0
+date_released: 2020-04-08
 
 # Either # or the anchor link to latest release notes in the blog post.
 # Must be prefixed with a # and have double quotes around it.