args not being passed to otherModesKeyBindingsNonRecursive runTask command

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BUG REPORT

Environment:

• VSCode Version: 1.12.1
• VsCodeVim Version: 0.7.1
• OS: OSX 10.11.6

What happened:
I set up my settings as follows:

    "vim.leader": "<space>",
    "vim.otherModesKeyBindingsNonRecursive": [
        {
            "before": ["leader", "e"],
            "after": [],
            "commands": [
                {
                    "command": "workbench.action.tasks.runTask",
                    "args": ["tsc"]
                }
            ]
        }
    ]

I then press <space> + e

The task palette comes up, allowing me to choose the tsc task (which I can do by typing tsc or arrowing down and pressing enter)

What did you expect to happen:
I expect the editor to run the tsc task without additional user input

How to reproduce it:
See above...

Start by reproducing the configuration for vim.otherModesKeyBindingsNonRecursive and the workbench.action.tasks.runTask command. Trace the keybinding command execution to determine where the args are lost; done means pressing the mapped keys runs the tsc task directly without showing the task picker.