Fix sorting of z-indexes

• add XO and NPM version badges; rename readme to lowercase (#15) 84d39c0
• update dependencies (#14) 26d2ce8
• fix sorting of integer-based lists (#13) 36bb94d

v1.1.3...v1.1.4

Update dependencies

• update ava to 1.0 34c90ea
• update prettier to 1.15.3 f80d282
• update xo to 0.23 efa06fa
• update color-sorter to v3.0.0 2a613ca