Merge branch 'release/1.0.27' into develop
Switched to go_http, improved error handling
Log errors, added template
Merge pull request #53 from praekelt/feature/issue-31-improved-sms-error-handling

Feature/issue 31 improved sms error handling
Refactored out the initialization of the api
change how learners are filtered for export
Merge pull request #55 from praekelt/feature/issue-67-filter-export

change how learners are filtered for export
Merge pull request #54 from praekelt/feature/issue-31-improved-sms-error-handling

Refactored out the initialization of the api
bumped version number
Merge branch 'release/1.0.28'