Issue 511: Force debug package to specific version.

[kaladay]

Description

Result after change:

npm list --depth=1000 | grep debug
│ │ │ ├── debug@4.3.4 deduped
│ │ │ │ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ ├─┬ debug@4.3.4 overridden
│ │ │ ├── debug@4.3.4 deduped
│ │ │ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │ │ │ ├── debug@4.3.4 deduped
│ │ │ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │   ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │ │ ├── debug@4.3.4 deduped
│ │ │   └── debug@4.3.4 deduped
│ │ │ │ │ └── debug@4.3.4 deduped
│ │ │ │ └── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │ │ ├── debug@4.3.4 deduped
│ │ │ │ │ ├── debug@4.3.4 deduped
│ │ │ │ │ └── debug@4.3.4 deduped
│ │ │ │ │ ├── debug@4.3.4 deduped
│ │ │   └── debug@4.3.4 deduped
│ │ │   └── debug@4.3.4 deduped
│ │ ├── debug@4.3.4 deduped
│ │   ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │ ├── debug@4.3.4 deduped
│ │ │   ├── debug@4.3.4 deduped

Fixes #511

Type of change

Please delete options that are not relevant.

• [x] Security Update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [x] Manually.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] My changes generate no new warnings
• [x] New and existing unit tests pass locally with my changes

[coveralls]

Coverage: 45.265% (+0.02%) from 45.242% when pulling 7a69b5b69ca83ae31c9fddaa0235d07e8d5d1ff6 on 511-debug_package into 8cba11f10726a0af0fcb7559dff1f0fb6146d3c9 on staging.