added basic glfw support
added resize event to window
Merge branch 'release/v0.4.2'
Merge branch 'release/v0.5.0'
Merge branch 'master' of github.com:vrsys/guacamole
Use cmake's option command.
Use cmake's option command.
Merge branch 'release/v0.6.0'
Merge branch 'release/v0.6.1'
Add function to calculate a camera frustum.
- fixed shader bug for output normal
- moved video3d shader code to resources
- removed obsolete resources
Remove unnecessary NodeVisitor.cpp file.
Simplify child traversal.
Add dfs_traverse function.
Add dfs_traverse_if
Merge branch 'feature/traverse' into develop
Merge pull request #33 from scholli/develop

Develop
Use iosfwd with forward declarations.
Remove unneeded include.