This lightweight package provides `fn()`, a compact variation of the
usual syntax of function declaration, in order to support
tidyverse-style quasiquotation of a function’s arguments and body.
Aside from enabling a shorter but fully general syntax for function
declarations, the main benefit of `fn()` is its ability to create
_pure_ functions via quasiquotation, which is tricky to guarantee in
base R, due to the mutability of bindings in a function’s lexical scope.