Makes XML and HTML more amenable to classic UNIX text tools

Current version

xml2 requires the following formula to be installed:
pkg-config 0.29.2 Manage compile and link flags for libraries

Formula history

Viktor Szakats xml2: remove protocol from web.archive.org param
Zhiming Wang xml2: improve test
Zhiming Wang xml2: use URLs from Wayback Machine
Viktor Szakats xml2: use secure homepage
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages
lim@chernjie.com xml2 0.5