fix docs for `has`

rm old `valueFunction` entry

update readme

\n\0

say “enumerable”; don’t say “hashmap”

reorder `has`/`lookup`

deprecate `isBoolean`, `isString`, `isFunction`

update (C) date

update (C) date

bump version

update metadata

alias `forEach` to newly vacant `each`

deprecate `valueFunction` and `stringFunction`

change to standard two-space indentation

edit formatting / styling / minor edits