Revert "define header_names on separate line for easier reading."
Revert "define header_names on separate line for easier reading."

This reverts commit 47e4b652ae12cf124615e68694b31a330ac4c8a7.

wumpus/internetarchive,dattasaurabh82/internetarchive,JesseWeinstein/internetarchive,brycedrennan/internetarchive,jjjake/internetarchive