[GNU ELPA] Fontaine version 0.4.0

[ELPA update]

Version 0.4.0 of package Fontaine has just been released in GNU ELPA.
You can now find it in M-x package-list RET.

Fontaine describes itself as:
  Set font configurations using presets

More at https://elpa.gnu.org/packages/fontaine.html

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This document contains the release notes for each tagged commit on the
project's main git repository:
<https://git.sr.ht/~protesilaos/fontaine>.

The newest release is at the top.  For further details, please consult
the manual: <https://protesilaos.com/emacs/fontaine>.


Version 0.4.0 on 2022-09-07
═══════════════════════════

  ⁃ Made it possible for the user option `fontaine-presets' to cover the
    `fixed-pitch-serif' face.  This face is used by the default Emacs
    faces in Info buffers to render inline code elements.  A list of
    properties within `fontaine-presets' can thus look like this (the
    manual explains everything in detail—else check my current setup at
    the end of this entry):

    ┌────
    │ (regular
    │  ;; I keep all properties for didactic purposes, but most can be
    │  ;; omitted.
    │  :default-family "Monospace"
    │  :default-weight regular
    │  :default-height 100
    │  :fixed-pitch-family nil ; falls back to :default-family
    │  :fixed-pitch-weight nil ; falls back to :default-weight
    │  :fixed-pitch-height 1.0
    │  :fixed-pitch-serif-family nil ; falls back to :default-family
    │  :fixed-pitch-serif-weight nil ; falls back to :default-weight
    │  :fixed-pitch-serif-height 1.0
    │  :variable-pitch-family "Sans"
    │  :variable-pitch-weight nil
    │  :variable-pitch-height 1.0
    │  :bold-family nil ; use whatever the underlying face has
    │  :bold-weight bold
    │  :italic-family nil
    │  :italic-slant italic
    │  :line-spacing nil)
    └────

    When the relevant attributes of `fixed-pitch-serif' are not
    specified, they fall back to the values of the `default' face.

    Note that `fixed-pitch-serif' is not used by my `modus-themes' and
    `ef-themes' because I think it looks awful out-of-the-box (a bitmap
    font on the GNU/Linux distros I used).  One can still modify any
    face to inherit from `fixed-pitch-serif', if they want to.

  ⁃ Introduced the command `fontaine-apply-current-preset' and wrote a
    relevant entry in the manual on how to "Persist font configurations
    on theme switch".  Relevant quote from the manual:

          Themes re-apply face definitions when they are loaded.
          This is necessary to render the theme.  For certain
          faces, such as `bold' and `italic', it means that their
          font family may be reset (depending on the
          particularities of the theme).

          To avoid such a problem, we can arrange to restore the
          current font preset which was applied by
          `fontaine-set-preset'.  Fontaine provides the command
          `fontaine-apply-current-preset'.  It can either be
          called interactively after loading a theme or be
          assigned to a hook that is ran at the post `load-theme'
          phase.

          Some themes that provide a hook are the `modus-themes'
          and `ef-themes' (both by Protesilaos), so we can use
          something like: […]

  ⁃ The once private variable `fontaine--current-preset' is now made
    public by means of a rename to `fontaine-current-preset'.  In
    practical terms, this tells advanced users that they can rely on the
    presence of this variable and/or on the fact that changes to it will
    be documented accordingly.

  My current configuration as of 2022-09-07 17:56 +0300, which might
  give you some ideas:

  #+begin_src emacs-lisp (require 'fontaine)

  ;; Iosevka Comfy is my highly customised build of Iosevka with
  ;; monospaced and duospaced (quasi-proportional) variants as well as
  ;; support or no support for ligatures:
  ;; <https://git.sr.ht/~protesilaos/iosevka-comfy>.  Iosevka Comfy `=
  ;; monospaced, supports ligatures Iosevka Comfy Fixed =' monospaced,
  ;; no ligatures Iosevka Comfy Duo `= quasi-proportional, supports
  ;; ligatures Iosevka Comfy Wide =' like Iosevka Comfy, but wider
  ;; Iosevka Comfy Wide Fixed `= like Iosevka Comfy Fixed, but wider
  ;; Iosevka Comfy Motion =' monospaced, supports ligatures, fancier
  ;; glyphs …  …