Check all parts of a  concatenated echo statement, ignore function arguments within echo statements.
Relates to #33
Extend XSS check to _xx functions family
Closes #33
Fix unit test php short tag, causing Travis to fail.
Flag usage of functions that modifies Filesystem
Closes #71
See http://vip.wordpress.com/documentation/code-review-what-we-look-for/#filesystem-writes
Add filter_input / filter_var to list of sanitizing functions in XSS sniff
Closes #99
Disallow use of PHP sessions.
Closes #75
Rename classes to allow for a second sniff targeting same issue
Add sniff to check for usage of $_SESSION var
Flag manipulation of server (default) timezone
Closes #76
Flag removal of admin bar
Closes #77
Add test for nested functions inside of escaping function
Add more functions that modify filesystem
Merge pull request #98 from WordPress-Coding-Standards/issue/71

Flag usage of functions that modify filesystem
Supply filter_input arg
Merge pull request #100 from WordPress-Coding-Standards/issue/99

Add filter_var / filter_input to sanitizing functions
Fix detection of closing parenthesis of functions
Use addError native string formatting.
Tweak whitespace
Merge pull request #102 from WordPress-Coding-Standards/issue/75

Disallow use of PHP session functions
Add DateTime::setTimezone to unit test for posterity