readme.md: added badge and link to Packagist
bluescreen.css: fixed Tracy logo [Closes #41]
typo
bluescreen.phtml: fixed tracy-collapsed CSS class printing
Merge pull request #42 from milo/pull-fix-collapsed

tracy-collapsed fix
BlueScreen: dumping variables in attribute 'title' works with NULLs and dump is trimmed
Dumper: data-tracy-href is rendered only when option 'location' is enabled (security fix)
Helpers::createHtml() uses flags ENT_IGNORE | ENT_QUOTES
usage of Debugger::$editor replaced with new Helpers::editorUri() or editorLink()
Dumper: added data-tracy-href to each dump() when option 'location' is enabled
Dumper: added constants LOCATION_SOURCE, LOCATION_LINK and LOCATION_CLASS
Bluescreen: dumps class locations
Logger: for each type of error is created own 'error-sent' file [Closes #10]