branch master updated (df2a0a7 -> a8b903f)

[Christopher Baines]

cbaines pushed a change to branch master
in repository data-service.

    from df2a0a7  Update for the changes around (guix scripts substitute)
     new 91aebb3  State where to send patches in the README
     new 28a7cb6  Better handle filtering narinfos
     new f37ae27  Support querying for outputs that have had successful builds
     new a8b903f  Only query for substitutes for things built in the last 5 
minutes

The 4 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "add" were already present in the repository and have only
been added to this reference.


Summary of changes:
 README                            |  4 ++++
 guix-data-service/model/nar.scm   | 35 ++++++++++++++++++++++-----
 guix-data-service/substitutes.scm | 50 +++++++++++++++++++++++----------------
 3 files changed, 63 insertions(+), 26 deletions(-)