Running list of utilities to include in the kit

[mandicai]

Desired behavior
To have a filter function that takes an array of words, i.e. ['apples', 'oranges', 'lemons'] and spits out apples, oranges and lemons. If it receives an array of length 2 it will spit out apples and oranges.

Yes I know the solution to this is easy but I always forget how slice works.

Todo
The solution is array.slice(0, -1).join(', ') + ' and ' + array.slice(-1) so just need to add this to a function. Maybe worth adding to journalize?

[mandicai]

(we already have something like this in the template to process multiple authors:

By {%- for author in context.authors or ['Super Cool Corgi', 'Friends'] -%}
      {% if not loop.last %}{{ authorComma() }}{% elif not loop.first %} and{% endif %} {{ author }}
 {%- endfor -%}

[mandicai]

• Add formatting function for percents, trims extra zero's

[mandicai]

• Pull things out from the covid tracker, better indicate how we use journalize and other helpers