Get a list of milestones from github and deal with paging

get_milestones_from_github.py

def get_milestones_from_github():
   print('Getting list of all milestones from Github.')
   req = requests.get('https://api.github.com/repos/mantidproject/mantid/milestones',
                      params={'state': 'all'})
   # print(r)
   _milestones = {}
   for milestone in req.json():
       # print(milestone)
       _milestones[milestone['title']] = milestone['number']

   status_code = req.status_code

   while status_code == 200:
       # we have more pages
       try:
           req = requests.get(req.links['next']['url'])
           # print(r)
           # print(r.links)
           for milestone in req.json():
               _milestones[milestone['title']] = milestone['number']
       except:
           status_code = 0

   print('Found {0} milestones.'.format(len(_milestones)))
   return _milestones