Retry in the case of temporary API error

Sometimes, we see this kind of temporary issue in API and it's better to be able to retry so the entire script doesn't stop.
```
File "c:\users\john\anaconda3\lib\site-packages\requests\adapters.py", line 508, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='api.iextrading.com', port=443): Max retries exceeded with url: /1.0/stock/market/batch?symbols=STNE%2CSTNG%2CSTNL%2CSTNLU%2CSTNLW%2CSTON%2CSTOR%2CSTOT%2CSTPP%2CSTPZ%2CSTRA%2CSTRL%2CSTRM%2CSTRO%2CSTRS%2CSTRT%2CSTT%2CSTT-C%2CSTT-D%2CSTT-E%2CSTT-G%2CSTWD%2CSTX%2CSTXB%2CSTZ%2CSTZ.B%2CSU%2CSUB%2CSUI%2CSUM%2CSUMR%2CSUN%2CSUNS%2CSUNW%2CSUP%2CSUPN%2CSUPV%2CSURF%2CSUSA%2CSUSB%2CSUSC%2CSVA%2CSVBI%2CSVM%2CSVMK%2CSVRA%2CSVT%2CSVVC%2CSVXY%2CSWAN%2CSWCH%2CSWI%2CSWIR%2CSWJ%2CSWK%2CSWKS%2CSWM%2CSWN%2CSWP%2CSWX%2CSWZ%2CSXC%2CSXCP%2CSXE%2CSXI%2CSXT%2CSYBT%2CSYBX%2CSYE%2CSYF%2CSYG%2CSYK%2CSYKE%2CSYLD%2CSYMC%2CSYN%2CSYNA%2CSYNC%2CSYNH%2CSYNL%2CSYPR%2CSYRS%2CSYV%2CSYX%2CSYY%2CSZC%2CSZK%2CSZNE%2CSZO%2CT%2CTA%2CTAC%2CTACO%2CTACOW%2CTACT%2CTAGS%2CTAHO%2CTAIL%2CTAIT&types=chart&range=2y (Caused by NewConnectionError(': Failed to establish a new connection: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond',))
```