Populate the repository
Add the #multienv DSL method

Whenever an auto-generated task continuation is invoked, it will load the environment file of the same name.
Modify the #desc DSL method to accept a Proc for its argument

If a Proc is given instead of a String, it applies only to the next invocation of #multienv and serves as a task description formatter.
Add the env:dump task as a debugging aid
Add the README