v1.3.0

Now Pegasus will burst a parametrized commands into individual commands in the queue file and only take one at a time. Before this change, it'll take the entire parametrized command entry even if it can not run all of them with available nodes.

Queue file from user:

- command:
  - echo {{ message }}
  message:
  - hi
  - bye

Pegasus will burst this into:

- command:
  - echo {{ message }}
  message:
  - hi
- command:
  - echo {{ message }}
  message:
  - bye

Then, if Pegasus has only one node available, it will take only one from the top (echo hi).