Version 1.3.3rc1

• Return an error if an adapter slot doesn't exist on an IOS router.
• NIO NAT support for VirtualBox VMs.
• NIO NAT support for QEMU VMs (user mode back-end is used).
• Throw an error if user put an invalid port range in config file
• Turn off configuration parser interpolation
• Catch configuration file parsing errors
• Force closing the event loop to avoid warning with Python 3.4.3
• Catch error when you can't mark a project as no longer temporary
• Catch BrokenPipeError for OSX frozen server
• Match how IOU initial-config is set for VPCS VM.
• Refactors how startup-config and private-config are handled for IOS routers.
• Catch the "WinError 0 The operation completed successfully" exception at a higher level.
• Fix temporary project not cleanup with save as
• If image is not found in VM directory look in images folder
• Ordered MAC addresses for QEMU based VMs.
• Merge remote-tracking branch 'origin/master'
• Force utf-8 configuraton files reading
• Do not list file starting with a . in upload handler
• Do not crash when closing a project if VirtualBox is not accessible
• Catch connection reset errors