v0.5.0

MetaGraphsNext v0.5.0

Diff since v0.4.1

Closed issues:

• Add constructors that infer the metadata types from the data values provided to constructor (#6)
• Type stability tests (#30)
• add_vertex! API (#41)

Merged pull requests:

• Use traits for (un)directed types (#40) (@filchristou)
• Type-stable constructors (#45) (@gdalle)
• Change internal handling of add_vertex! checks (#47) (@filchristou)
• Add data-free methods for add_vertex! and add_edge! (#48) (@thchr)
• Fix doctests (#49) (@gdalle)
• Add label listing utilities (#50) (@gdalle)