* gnu/packages/music.scm (fmit): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

* gnu/packages/haskell-xyz.scm (ghc-attoparsec-bootstrap,
ghc-integer-logarithms-bootstrap, ghc-scientific-bootstrap,
ghc-semigroups-bootstrap, ghc-unordered-containers-bootstrap,
ghc-wcwidth-bootstrap)[properties]: Fix typo, make 'hidden?' a tuple.

* gnu/packages/emacs-xyz.scm (emacs-tao-theme): New variable.

* gnu/packages/textutils (odt2txt): New variable.
* gnu/packages/package-management (diffoscope)[native-inputs]: Add odt2txt.
  [use-modules]: Remove accidentally added libreoffice package module.

* gnu/packages/images (sng): New variable.
* gnu/packages/package-management (diffoscope)[native-inputs]: Add sng.

* gnu/packages/image (pngsuite): New variable.

* gnu/packages/package-management (diffoscope)[native-inputs]: Add additional
  dependencies for tests.
  [use-module]: Add corresponding package modules.

* gnu/packages/package-management (diffoscope) [native-inputs]: Add additional
  packages used for tests.

* gnu/packages/package-management (diffoscope): Update to 123.
  [arguments]: Update phase writable-test-data to include tests directory.
    Add phase remove-ocaml-test.

* gnu/packages/python-xyz (python-debian): Update to 0.1.36.
  [source]: Switch to using git-fetch.
  [arguments]: Add phase to delete tests depending on tools not yet present in
  guix.
  [propagated-inputs]: Add python-chardet.

* gnu/packages/bioconductor.scm (r-rsubread): Update to 1.34.7.

* gnu/packages/bioconductor.scm (r-regioner): Update to 1.16.3.

* gnu/packages/bioinformatics.scm (r-gprofiler): Update to 0.6.8.

* gnu/packages/bioinformatics.scm (r-annotationhub): Update to 2.16.1.

* gnu/packages/bioinformatics.scm (r-edger): Update to 3.26.8.

* gnu/packages/cran.scm (r-ggraph): Update to 2.0.0.
[propagated-inputs]: Add r-graphlayouts, r-rlang, and r-tidygraph; remove
r-plyr.

* gnu/packages/cran.scm (r-msigdbr): Update to 7.0.1.

* gnu/packages/cran.scm (r-ggeffects): Update to 0.12.0.

* gnu/packages/cran.scm (r-ggformula): Update to 0.9.2.

* gnu/packages/cran.scm (r-insight): Update to 0.5.0.

* gnu/packages/cran.scm (r-ggpubr): Update to 0.2.3.

* gnu/packages/cran.scm (r-geometry): Update to 0.4.4.

* gnu/packages/cran.scm (r-feather): Update to 0.3.4.

* gnu/packages/statistics.scm (r-matrixstats): Update to 0.55.0.

* gnu/packages/statistics.scm (r-rcpparmadillo): Update to 0.9.700.2.0.

* gnu/packages/statistics.scm (r-devtools): Update to 2.2.0.
[propagated-inputs]: Add r-covr, r-crayon, r-desc, r-dt, r-ellipsis, r-glue,
and r-rversions.

* gnu/packages/statistics.scm (r-gdtools): Update to 0.2.0.
[inputs]: Add freetype.
[propagated-inputs]: Add r-systemfonts; remove r-withr.

* gnu/packages/cran.scm (r-tidygraph): New variable.

* gnu/packages/cran.scm (r-graphlayouts): New variable.

* gnu/packages/cran.scm (r-systemfonts): New variable.

* gnu/packages/cran.scm (r-covr): New variable.

* tests/opam.scm: Expect propagated-inputs instead of inputs.

* gnu/packages/web.scm (poussetaches): Update to 0.0.2.

* gnu/packages/game-development.scm (nml)[arguments]: Add a phase to fix
for newer pillow.

This is a followup to f8c143a7, which
allows syntax highlighting of @lisp snippets in the HTML output.

* doc/guix.texi, doc/contributing.texi: Use @lisp instead of @example
for all the Scheme snippets.

* doc/build.scm (guile-lib/htmlprag-fixed): New variable.
(syntax-highlighted-html): Use it instead of GUILE-LIB.

* gnu/packages/lxqt.scm (qtermwidget)[inputs]: Add utf8proc.

* gnu/packages/vpn.scm (wireguard): Update to 0.0.20190905.

* gnu/packages/linux.scm (linux-libre-5.2-version): Update to 5.2.13.
(linux-libre-5.2-pristine-source): Update hash.

* gnu/packages/linux.scm (linux-libre-4.19-version): Update to 4.19.71.
(linux-libre-4.19-pristine-source): Update hash.