* YesssSMS handling more errors, upgrade to version 0.2.1
- handling missing internet connection nicely
- disabling login with non-working credentials (website locked account for 1 hour)
- upgrade to new upstream version of YesssSMS
* notify.yessssms tests
* test requirements
* flake8 fix
* fixing tests, new upstream version 0.2.3
fixing tests based on requested changes, coverage
* removing unmotivated print
* passing exception to ConnectionError and SMSSendingError logger
Florian Klien