Log Message:
devel/ruby-rgl: update to 0.5.6

update ruby-rgl to 0.5.6.

pkgsrc change: add "USE_LANGUAGES=	# none".

2019-01 Release 0.5.6

Artemy Kirienko
 * PR #42 Add method Graph#path?(u, v) to check if a path exists between two vertices
Horst Duchene
 * Fix #47 set_to_begin for graph iterator (881aa8)

2019-01 Release 0.5.5

Artemy Kirienko
 * PR #42 Add method Graph#path?(u, v) to check if a path exists between two vertices
Horst Duchene
 * Fix #47 set_to_begin for graph iterator (881aa8)