ExIcon provider for Heroicons.
The library has four variants, which can be selected with the variants
configuration option:
:outline- outlined icons on a 24x24 viewbox:solid- filled icons on a 24x24 viewbox:mini- filled icons on a 20x20 viewbox:micro- filled icons on a 16x16 viewbox
Without the option, only the :outline variant is generated.
Note that the variants differ in their attributes. The outlined icons have
stroke and stroke-width attributes and a fill of none, while the
filled ones only have a fill of currentColor. Attributes that a variant
does not have are ignored, so a single attrs option can cover all of them.
Not every icon is available in every variant.