Pinterest access tokens are rate limited at 200 requests per
hour (or maybe per 2 or 3 hours?) so having just one access token
for all users isn't going to work in the long run.
https://img.yt/ wasn't available for a couple of days, but has now
re-emerged as https://imx.to/ with a new web-interface.
Links to older images still work (see tests).
- fix the cloudflare challenge result if the last decimal places
are zero (JS`s toFixed() removes trailing zeroes)
- fix downloading of kissmanga chapter-pages hosted on blogspot
(accessing blogspot with "kissmanga.com" as referrer yields a 401)
- disable certificate validation for 'mangahere' tests
- update flickr test result
Python3.5 and lower throw an UnicodeEncodeError when trying to print
not-encodable characters when not using 'utf-8' as encoding.
Setting their error handlers to 'replace' should help.
