Update plugin.xml and README.md for release 0.1.2
Restrict excessive symbol visibility
Implement Convert NOWDOC to HEREDOC with escaping with fixed heredoc identifier
Cleanup test data for PhpNowdocToHeredocWithEscapingIntention
Keep nowdoc identifier when converting nowdoc to heredoc
Fix bad PhpNowdocToHeredocWithEscapingIntention description
Fix bad method name casing
Fix bad variable name
Implement Convert HEREDOC to NOWDOC with escaping
Improve "Convert HEREDOC to NOWDOC with escaping" implementation
Change bad intention after and before examples
Add several methods to PhpStringUtil and refactor many ones to adapt to heredoc to nowdoc conversion functionality
Add tests for "Convert HEREDOC to NOWDOC with escaping"
Implement protection on converting heredoc to nowdoc against breaking the string because of a string fragment becoming the delimiter after unescaping
Add tests for verifying protection against string breaking
Remove unnecessary caret from test source file
Move test from wrong test class