Updating jumps major versions

[erikverbeek]

In the composor.json file, the dependency for TinyMCE is defined as '>4'.
This results in TinyMCE jumping from version 4.* to 5.* without any way block this because this package doesn't define a major version update to handle this.

My suggestion would be to release a 1.1.4 that locks TinyMCE down to version 4 and release a 2.0 version which installs version 5. This way your users can choose themselves which versions works for them and can update their systems before loading TinyMCE 5, which contains breaking changes.