Adding debug message for install targets

Merge branch 'develop' of github.com:ChaiScript/ChaiScript into develop

Update release notes

Update release notes for 5.8.5

Increment to 5.8.4

Add support for *& return types

Update to 5.8.2 release notes

Move debug over to windows build

Update release notes and prepare for 5.8.0

Implement option explicit for dynamic objects.

Closes ChaiScript#218