On à And The Empty Array/String

[PeterShaggyNoble]

Recently A.à() & S.à() were updated to include the empty array and string. Definitely useful to have but there are still occasions when they're not needed but, because they're the last element in the array, the shortest way to remove them is to filter by length with fÊ.

I propose, instead, that they be added at the beginning of the array so we can slice them off with Å, thus saving a byte.