Reasons for making this change:

Most Logos projects use Theos as build chain, but there is no default .gitignore for it

Links to documentation supporting these rule changes:

There is a lack of documentation about this folders, but any project created with theos, will contain these folders, here is a template folder: https://github.com/theos/templates/tree/master/ios/library
The folders .theos and packages are created after building

If this is a new template:

• Link to application or project’s homepage: https://github.com/theos/theos/