v1.6.0

Graphs.jl v1.6.0

Diff since v1.5.2

Summary of changes:

Potentially breaking changes:

• Graphs.jl requires Julia version >= v.1.6 from now on.
• Base.zero is not a mandatory part of the interface for subtypes of AbstractGraph anymore. Therefore methods that deal with some abitrary AbstractGraph cannot relay on the existence of that method anymore.

Auto generated summary:

Merged pull requests:

• Make zero function not mandatory for AbstractGraph interface (#85) (@simonschoelly)
• Make minimum Julia version v1.6 (#91) (@simonschoelly)