Update .gitignore
Merge pull request #141 from aaukt/master

Update .gitignore to include php files
fixes #150 - don't use @list for compatibility with custom error handlers
media query merging
added support for null default value in inline if
add EOL
prepare 0.0.10 release
Fix issue #164 for multiline string parsing

When parsing strings, the parser, on a newline, should look behind
for a backslash to determine if this is a multiline string.

The code below is an example of a valid CSS code that should be
compiled by scssphp without throwing an exception.

    body:after {
        content: "This is a \
    multiline string.";
    }
replace is_null with isset for better performance

ref: [is-null docs](http://php.net/manual/en/function.is-null.php#84161)
Fix typo in fix for #164
Add tests for #164
formart with tab
Fix string newline escaping for Windows

As per discussion in #164, this allows strings with `\\n` and `\\n\r` before the string delimiter.
Merge remote-tracking branch 'yahasana/patch-1'
Merge remote-tracking branch 'caiosm1005/patch-1'