fix issue with filenames with no directory causing error

setup.py

@@ -3,7 +3,7 @@ import codecs
 import os
 
 
-VERSION = '1.4.3'
+VERSION = '1.4.4'
 AUTHOR_NAME = 'Andy Port'
 AUTHOR_EMAIL = 'AndyAPort@gmail.com'
 GITHUB = 'https://github.com/mathandy/svgpathtools'

svgpathtools/paths2svg.py

@@ -217,7 +217,7 @@ def disvg(paths=None, colors=None, filename=None, stroke_widths=None,
     dirname = os_path.abspath(os_path.dirname(filename))
     if not os_path.exists(dirname):
         makedirs(dirname)
-        
+
     # append time stamp to filename
     if timestamp:
         fbname, fext = os_path.splitext(filename)