helper for shortest paths with default edge weights=1
Remove vertex_index(::Integer), make special case for SimpleGraph
Thanks @sbromberger
Fixes #131
Fixes #127
Closes #133
special case for ProvidedVertexType
Merge pull request #135 from JuliaLang/int_index

Remove vertex_index(::Integer), make special case for SimpleGraph
Fix deprecation warning
Typo
Merge pull request #136 from kirbyfan64/patch-1

Fix deprecation warning
bump REQUIRE
edge_dists is now optional for Dijkstra

Documentation to support the fact that edge_dists is now optional for dijkstra.
Merge pull request #130 from sbromberger/dijkstra

helper for shortest paths with default edge weights=1