version 0.4.19: non-destructive netns.create()
version 0.4.2: ipdb on-demand views
version 0.4.20: fixes from the master
version 0.4.21: vrf_table hotfix
version 0.4.3: critical ipdb fix -- handle empty IFLA_INFO_DATA
version 0.4.4: iproute fixes
version 0.4.5: devlink support
version 0.4.6: ipdb port mapping fix
version 0.4.7: compat code
version 0.4.8: compat proxying fix
version 0.4.9: compat fd leak fix
version 0.5.0: change commit exception logic
version 0.5.1: ipdb eventloop API
version 0.5.2: Python 3.7 support
version 0.5.3: NDB prototype
version 0.5.4: basic SR-IOV support
version 0.5.5: IPRoute comes to Windows