* improve Tree Shaking in ESM
Instead of bundling everything into a single ESM file, we generate every
single file as ESM. This is what we did in 1.4.x as well.
I would expect if your library had a single ESM file and you only used 1
function that the application you use it in correctly does the
tree-shakign for you. Apparantly a lot of applications are not properly
setup for this, so let's create multiple files instead.
* update changelog
Robin Malfait