branch master updated (b3d1e0f -> 4b88345)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix-artwork.

    from b3d1e0f  website: commit-authentication: Final words.
     new d26a1ab  website: commit-authentication: Add header and footer.
     new 2dbd8c2  website: commit-authentication: Publish.
     new 09a79b0  website: securing-updates: Fix typos, tweak wording.
     new 4b88345  website: securing-updates: Add illustration for introductions.

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:
 .../securing-updates.md}                           |  97 ++++++++++++-------
 website/static/blog/img/commit-graph-intro.dot     |  21 +++++
 website/static/blog/img/commit-graph-intro.svg     | 104 +++++++++++++++++++++
 website/static/blog/img/commit-graph.svg           |  97 +++++++++++++++++++
 4 files changed, 286 insertions(+), 33 deletions(-)
 rename website/{drafts/commit-authentication.md => posts/securing-updates.md} 
(87%)
 create mode 100644 website/static/blog/img/commit-graph-intro.dot
 create mode 100644 website/static/blog/img/commit-graph-intro.svg
 create mode 100644 website/static/blog/img/commit-graph.svg