Version 1.5.0 beta 1

• Allow an IOS router to stop even the Dynamips hypervisor command fail to be sent. Ref #488.
• Extract private-config only when necessary (content is different than the default). Fixes #520.
• Fixes disabling the VPCS relay feature. Fixes #521.
• Fixes wrong exception in Docker VM implementation.
• Force Npcap DLL to be used first for Dynamips and uBridge (instead of the one from Winpcap if installed).
• Fixed startup-config is lost if you change any IOS router settings. Fixes #1233.
• Fixes check for NPF service and add check for NPCAP service on Windows.
• Fix ProcessLookupError X11VNC
• Force tag latest for docker image if no tag is specified
• Cleanup unbreakable space
• Do not raise error if vmrun.exe is named vmrun.EXE
• Load docker api only for Linux