Add the file name before the code in Three.js
Also add the filename in the build.js build
Change the way the extra info appears
Support OBJ and MTL files that may contain tags split onto multiple lines, using a trailing backslash to signify the split, in the OBJ converter.
Object3D remove() can take arbitrary arguments.

Now is possible to do:

    obj.remove( obj2, obj3 );

From discussion in #4958, see also #4977.
Merge pull request #4982 from manuq/fix4958b

Object3D remove() can take arbitrary arguments.
Merge pull request #4984 from okready/patch-2

Support OBJ and MTL files that may contain tags split onto multiple line...
Merge pull request #4975 from gero3/AddExtraInfoBuild

Add extra info build