fix a bug on loss cache in Network.rebuild()
add self._switch_set to Network for fast membership query
update README just for readability
add network.Graph to maintain dual graph of network
add network.SearchSpace of optimization
fix a bug in configset._conv_weights()
fix a bug on comparison between configsets
fix a bug on loss computation
add topology_constraints_only option to enumerate(), from 6ad1dc
add map between section and vertex in Network.Graph
support 1-phase as well as 3-phases
add data/baran89.yaml
rename data/baran32.yaml
add data/fukui-tepco
fix data/baran32.yaml
v0.92