Cannot compile latest version (1.32.0) of 'gifski' package, error:
make: *** [Makevars:14: myrustlib/target/release/libmyrustlib.a] Error 2

Fixed by using the "remotes" package to compile the older stable version (1.12.0)

* unified the vowels definition (in some exercices the "y" character was missing)
* moved one exercice where the repetition special character "+" was used before the section introducing it
* changed "Grouping" section title by "Capture group"
* illustrated the difference between functions str_extract and str_extract_all

replace get_plot_component by get_legend in last exercise of section 2.7

fix: rework challenges 2 and 3. Ref #2

See merge request !10

* challenge 2: define error bars through confidence interval
* challenge 3: color and label points per airport destination

fix: correct code formatting and warnings

See merge request !9

docs: update mail templates

See merge request !8

* add sass files to define custom callout
* restore Raleway font
* handle light and dark themes
* mark old css files as deprecated

Add lua filter to define custom Quarto callout, reference:
https://github.com/quarto-dev/quarto-cli/issues/844#issuecomment-1653419884

* replace pencadre div by custom Quarto callout block
* correct exercise typos (english, markdown)
* add solutions to session 7
* reshape author(s)

correct unconsistent code formatting with styler package
correct deprecated warnings

* change date, contact address, framaforms links
* add optional Python extension
* add certificate warning

manage generated resource file mpg.csv by hand because quarto does not add it as resources (as it should be expected)

update docker r_for_beginners (tidyverse:4.3.1)

See merge request !7