Deal with any unwraps in non-test functions

[JosephTLyons]

• [X] https://github.com/JosephTLyons/outliers/blob/1e631bf4343d14633a7a576ef52bf0010fc2e568/src/lib.rs#L29 https://github.com/JosephTLyons/outliers/commit/71169d305c013a0577c5cf3c0ae72f475205be0f
• [X] https://github.com/JosephTLyons/outliers/blob/f21f466723d57a81fc69e02000656a41472e13f6/src/lib.rs#L178 https://github.com/JosephTLyons/outliers/commit/a5af87283cdd13a0838e683a79a04f47243a3145
• [x] Others?