fixed deep recursion warnings in Mojo::DOM and Mojo::DOM::HTML
improved all_text performance in Mojo::DOM
improved Mojo::DOM::CSS, Mojo::DOM::HTML and Mojo::JSON performance with regular expression optimizations
simplify whitespace handling in Mojo::JSON
use more consisten explanation for whitespace trimming
bump version
improved Mojo::DOM::HTML performance slightly
more consistent formatting of regular expressions
another small formatting change
processing instructions are a little less common
more consistent order
fixed small selector bug in get command
use each consistently
bump version