Some new formats

[gmbecker]

At J&J we need a few formats that aren't currently implemented but we'd like to avoid needing a custom formatting function. The corresponding PR implements them with tests.

Specifically we need "xx.x (xx.xx)" (one more digit in parentheses) and siblings for mean (sd) and we need "xx, xx" and siblings for ranges (don't ask me why we can't just use the hyphen variants, I don't know.

[shajoezhu]

hi @gmbecker , I was wondering if you have closed this with #337 already