Merge pull request #116 from Norgat/middlewares

Rename quil.middleware.* namespaces to quil.middlewares.* namespaces.
Remove wiki generation code.
Add pause-on-error middleware.
Improve pause-on-error middleware.
Add navigation-3d middleware.
Add comments to navigation-3d.
Fix error in navigation-3d.
Merge remote-tracking branch 'quil/master' into cljs