Add drawio extension

src/Dflydev/ApacheMimeTypes/PhpRepository.php

@@ -908,6 +908,7 @@ class PhpRepository implements RepositoryInterface
         'list' => 'text/plain',
         'log' => 'text/plain',
         'in' => 'text/plain',
+        'drawio' => 'text/plain',
         'dsc' => 'text/prs.lines.tag',
         'rtx' => 'text/richtext',
         'sgml' => 'text/sgml',
@@ -1737,7 +1738,7 @@ class PhpRepository implements RepositoryInterface
         'text/csv' => array('csv'),
         'text/html' => array('html', 'htm'),
         'text/n3' => array('n3'),
-        'text/plain' => array('txt', 'text', 'conf', 'def', 'list', 'log', 'in'),
+        'text/plain' => array('txt', 'text', 'conf', 'def', 'list', 'log', 'in', 'drawio'),
         'text/prs.lines.tag' => array('dsc'),
         'text/richtext' => array('rtx'),
         'text/sgml' => array('sgml', 'sgm'),

src/Dflydev/ApacheMimeTypes/Resources/mime.types

@@ -1460,7 +1460,7 @@ text/html					html htm
 # text/javascript
 text/n3						n3
 # text/parityfec
-text/plain					txt text conf def list log in
+text/plain					txt text conf def list log in drawio
 # text/prs.fallenstein.rst
 text/prs.lines.tag				dsc
 # text/vnd.radisys.msml-basic-layout