* Added dynamic discovery agent
* Added new `keepalive` configuration parameter to set default environment
keepalive.
* Improved support for docker private registry
* Added support for dynamic environment reconfiguration: add, stop, restart containers on the fly
* HTTP API: Backwared-incompatbile changes to format of the
returned env structure:
* export address has been moved into a separate top-level field
* `ports` object now contains direct mapping between internal
and external ports
* HTTP API: New endpoints:
* `GET /api/v1/env` - List environments
* `GET /api/v1/env/{id}` - Get environment info
* `PATCH /api/v1/env/{id}` - Patch an environment
* `GET /api/v1/tpl` - List templates
* TPL JS: <container>.`MountData()` and `MountString()` now accept `extra-interpolate-data`
parameter which allows passing custom interpolation data.
It is accessible under `.Extra` key.
* TPL JS: Added a new <container>.`SetEntrypoint()` method
* A simple web application has been integrated into xenvman server.
It allows one to list and manage active environments and browse
through available templates.