Bump version and rename slot to append
Bump src/formkit.vue to use the 'append' slot instead of 'additional'. Change the v-if check to $slots.append and the slot name to 'append' so appended content renders correctly.
Bump src/formkit.vue to use the 'append' slot instead of 'additional'. Change the v-if check to $slots.append and the slot name to 'append' so appended content renders correctly.