Event title error when containing special characters like "é" : 'ascii' codec can't encode character u'\xe9' in position 1: ordinal not in range(128)

[adimux]

I encountered this issue when creating an event whose title is "Début stage".
The line in cause is the 206th from the file /site-packages/swingtime/models.py when the occurrence is outputted as string.

/site-packages/swingtime/models.py
204 #---------------------------------------------------------------------------
205 def str(self):
206 return '{}: {}'.format(self.title, self.start_time.isoformat())

[adimux]

To fix it, we need to replace the 206th line with
206 return '%s: %s' % (self.title, self.start_time.isoformat())