Remove unneeded bit.
Switching Parsedown from "dev" to "stable" version.
Bumping Base-2014
Let the developer define installed via composer

The latest changes broke my installation, mainly because it's not able to correctly identify if it was installed via composer. So this fix let the development define the constant before this script is triggered.
changelog does't works when update content
Merge pull request #1197 from andersonamuller/patch-2

Let the developer define installed via composer
Merge pull request #1199 from tonicospinelli/fix-changelog

content changelog doesn't works when update content