remove the concept of `refactor` and find a word with a better business connotation

[noah edward hall]

refactor is like a word from the 1800s, it will never sound good in a public conversation

we need something like upgrade or enhance

a first principle from the nim style guide

Good code usually happens after several rewrites: 
on the first pass, the focus is on the problem, not the code - 
when the problem is well understood, the code can be rewritten