New center button
fix viewer zoom coords
Merge branch 'dev_menu' of https://github.com/buttleofx/ButtleOFX into release
Fix for the y of the browser
Merge branch 'develop' of https://github.com/buttleofx/ButtleOFX into develop
Fix for the deletion by using keyboard's shortcut
Fix for the pluginWindow
Merge branch 'develop' of https://github.com/buttleofx/ButtleOFX into dev_browser
Add the name of the team #2 in description
Merge branch 'develop' of https://github.com/buttleofx/ButtleOFX into develop
fix presentation
Add pre-requisites in the description
Fix to avoid error messages
Merge branch 'develop' of https://github.com/buttleofx/ButtleOFX into develop
Remove the folder TuttleOFX in ButtleOFX
Update README.md

Remove deprecated install instructions
Use ImageProvider in the Browser
Images in browser are got by numpy.zeros
Try to get images in Browser by tuttle
viewer: fix troubles if there are invalid but unused nodes in the graph