- Refactor campaign.Message into campaign.Message and
campaign.CampaignMessage
- Remove ad-hoc goroutines (flawed approach) that were used to push
admin and optin notifications.
- Provision for largscale pushing of ad-hoc, non-campaign messages
such as transactional messages (in the future).
- Clean up main.go (by moving init to init.go) and improve
composition comprehension.
- Refactor app context and init struct and field names.
- Update package dependencies in initialisation.
- unchecked returns fixed (most)
- remove unused constants
- remove unsed structs
- function parameters unused or incorrectly used
- removed if else chains for error checks
- use regex MustCompile instead of compile
- spell checks
- preallocate slice cap when size known
- scope issues inside range
