* Updater loop with period and http route
* Using DNS over TLS to update servers
* Better logging
* Remove goroutines for cyberghost updater
* Respects context for servers update (quite slow overall)
* Increase shutdown grace period to 5 seconds
* Update announcement
* Add log lines for each provider update start
* Adapt storage: SyncServers write to file option, export FlushToFile
* CLI built-in updater for old and new PIA servers
* Update hardcoded IP addresses for PIA old and new servers
* Add PIA old to allServers struct and update timestamps
* Adapt code to work with new and old PIA servers
* Remove PIA subdomains (unneeded) from resolver tool
- Refers to #218
- Checks for custom port value depending on protocol
- Remove default port from server constants
- Use 443 and 1194 ports respectively for tcp and udp
- PIA updated
- Surfshark updated
- Windscribe updated (US East and Slovenia removed)
- Capital letters fixed for regions of Windscribe
- Resolver program updated to match latest format for constants
- Goal was to simplify main.go complexity
- Use common structures and interfaces for all vpn providers
- Moved files around
- Removed some alias models
- Plain DNS is used only for the first resolving of github.com to obtain block lists and crypto files required by Unbound
- DNS over TLS is used at all time by the system and the Go program thereafter, even between periodic restarts
- Downtime during a periodic update is < 1 second
- On an Unbound start or unexpected exit error, the container falls back on the unencrypted version of the DNS in order to try restarting Unbound
- Allows to not need to resolve subdomains at start before tunneling
- Allows for Unbound to be configured and started after tunneling
- Refers to #127
- Fix bad permissions bits for files
- VPNSP is 'private internet access' instead of 'pia' (retro compatible)
- Check errors of deferred unsetEnv functions in params package
- Other lint errors fixing and code simplifications
