Updates 18.09 release notes for release.

git: 2.19.0 -> 2.19.1 (CVE-2018-17456)

uutils-coreutils: 2018-02-09 -> 2018-09-30

misc/vim-plugins: add posva/vim-vue

vagrant: remove unused vendored Gemfile{,.lock}

docs: Link to Definition

nixos/emby: fix use of outdated binary name changed by #47659

Hydra passes the full revision in to the input, which we pass through.

If we don't get this ,we try to get it from other sources, or default to
master which should have the definition in a close-ish location.

All published docs should have theURL resolve properly, only local
hackers will have the link break.

nixpkgs: Start documenting library functions in XML

Covers assert functions and about half of the attrsets functions.

Some internal consistency around IDs could be improved.

zn_poly: 0.9 -> 0.9.1

Sage has taken over maintenance since the original author no longer
maintains the project.

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/brogue/versions

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/containerd/versions

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/eid-mw/versions

Signed-off-by: Austin Seipp <aseipp@pobox.com>

Signed-off-by: Austin Seipp <aseipp@pobox.com>

for running all tests, notmuch requires a database file, which can be
downloaded at https://notmuchmail.org/releases/test-databases/

See test/README in notmuch sources for further info.

fossil: 2.6 -> 2.7

matrix-synapse: 0.33.5 -> 0.33.6

envsubst: init at 1.1.0

kubeval: init at 0.7.3

ibus-engines.typing-booster-unwrapped: 2.1.1 -> 2.1.2

nixos system-activation: support activation scripts run in a user context

lsp-plugins: init at 1.1.4