Merge pull request #477 from yggdrasil-network/changelog

Update CHANGELOG.md
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@ -25,6 +25,39 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
- in case of vulnerabilities.
-->
## [0.3.6] - 2019-08-03
### Added
- Yggdrasil now has a public API with interfaces such as `yggdrasil.ConnDialer`, `yggdrasil.ConnListener` and `yggdrasil.Conn` for using Yggdrasil as a transport directly within applications
- Session gatekeeper functions, part of the API, which can be used to control whether to allow or reject incoming or outgoing sessions dynamically (compared to the previous fixed whitelist/blacklist approach)
- Support for logging to files or syslog (where supported)
- Platform defaults now include the ability to set sane defaults for multicast interfaces
### Changed
- Following a massive refactoring exercise, Yggdrasil's codebase has now been broken out into modules
- Core node functionality in the `yggdrasil` package with a public API
- This allows Yggdrasil to be integrated directly into other applications and used as a transport
- IP-specific code has now been moved out of the core `yggdrasil` package, making Yggdrasil effectively protocol-agnostic
- Multicast peer discovery functionality is now in the `multicast` package
- Admin socket functionality is now in the `admin` package and uses the Yggdrasil public API
- TUN/TAP, ICMPv6 and all IP-specific functionality is now in the `tuntap` package
- `PPROF` debug output is now sent to `stderr` instead of `stdout`
- Node IPv6 addresses on macOS are now configured as `secured`
- Upstream dependency references have been updated, which includes a number of fixes in the Water library
### Fixed
- Multicast discovery is no longer disabled if the nominated interfaces aren't available on the system yet, e.g. during boot
- Multicast interfaces are now re-evaluated more frequently so that Yggdrasil doesn't need to be restarted to use interfaces that have become available since startup
- Admin socket error cases are now handled better
- Various fixes in the TUN/TAP module, particularly surrounding Windows platform support
- Invalid keys will now cause the node to fail to start, rather than starting but silently not working as before
- Session MTUs are now always calculated correctly, in some cases they were incorrectly defaulting to 1280 before
- Multiple searches now don't take place for a single connection
- Concurrency bugs fixed
- Fixed a number of bugs in the ICMPv6 neighbor solicitation in the TUN/TAP code
- A case where peers weren't always added correctly if one or more peers were unreachable has been fixed
- Searches which include the local node are now handled correctly
- Lots of small bug tweaks and clean-ups throughout the codebase
## [0.3.5] - 2019-03-13
### Fixed
- The `AllowedEncryptionPublicKeys` option has now been fixed to handle incoming connections properly and no longer blocks outgoing connections (this was broken in v0.3.4)