monadic >: increment verb

[cratelyn]

here's a small monadic verb, whose implementation will be described in the readme.

; git show --oneline --quiet
62edb1f (HEAD -> add-increment, origin/add-increment) 🤠 `>:` increment operator
; cargo test --quiet

running 92 tests
........................................................................................ 88/92
....
test result: ok. 92 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s


running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s


running 63 tests
........................ii.....................................
test result: ok. 61 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.01s


running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s