Paradrop

* Secured the router settings page with a login system.
* Manage SSH authorized keys through the router tools page.
* Support advanced wireless options such as 802.11ac settings, transmit power, and hidden ESSID.
* Support RADIUS authentication and accounting for WPA2 Enterprise mode.
* Restart chutes with new values for environment values.
* Added API endpoint for chutes to list Wi-Fi clients connected to the chute's AP.
* More flexibility for developing light chutes (install apt-get packages and run as root).
* Support Wi-Fi client (station) mode (experimental, not for WAN connectivity yet).

We are excited to release Paradrop version 0.4! This release greatly simplifies the process of developing for Paradrop with an easier to learn chute structure and better debugging facilities.

Features with this release:
- Exposed many router settings through local portal and cloud management
- Support configuring ZeroTier for remote access
- Introduced light chutes, which use a streamlined design that is easier to use
- Improved support for web services in chutes via subdomains and path routing
- Chute log messages are available on the local portal
- Added reboot and shutdown commands for router

Bug fixes:
- There was an issue related to nondeterministic Wi-Fi device names, which lead to applying configuration settings to the wrong device.
- There were various issues around failure recovery and debugging.

This release updates the Paradrop daemon to run on Ubuntu Core 16.04 and fixes some major issues that affected security and stability in Paradrop v0.2.

Features with this release:
- The router local portal has been improved to provide more system information and easier configuration. The confusing "Login" button has been renamed.
- Support for firewall rules to manage traffic between WAN, LAN, and chutes.
- Added function to reset the router to default configuration.
- Routers running v0.3 will be capable of hosting 802.11ac WiFi networks (experimental).
- Chutes are able to obtain access to Bluetooth and other devices (experimental).

Bug fixes:
- There was a bug preventing Docker from starting up properly. It was related to PID files not being cleaned up properly and has been addressed.
- There was a problem on certain hardware that caused WiFi cards to be missing on startup. This has been addressed with a configuration option that reboots the system if WiFi cards are missing.

This long-awaited second release makes Paradrop routers fully functional as WiFi access points. It also integrates with our cloud management service at https://paradrop.org to make chute installation as easy as possible.

Features with this release:
- Routers running v0.2 have complete support for hosting 802.11a/b/g/n WiFI networks.
- Routers can be managed from the cloud (paradrop.org).
- Web-based management means Ubuntu 14.04 is no longer required for development.
- Chutes receive a private, persistent data storage on the router.
- Instance tools expose information about WiFi clients to the chute.

Tagging this as our 0.1 release to correspond with the v0.1 release of our main Paradrop code.

Here we have support for a hello-world chute, virtual-routers, and parental-controls.