Implement the inspect mode, update dependencies and refactor the watch mode flag

[homer0]

What does this PR do?

On homer0/projext#56 I added the inspect mode, so Node targets can be executed with the Node inspector or Google's ndb. This pull request is the implementation for Rollup.

While I was implementing it, I decided to change the way the watch option was being handled: instead of using an extra parameter everywhere, I applied the same approach as for the forceRun, if the flag is enabled, change the setting on the target object. (This change is what makes this PR breaking).

I also updated all the project production and development dependencies to their latest versions.

How should it be tested manually?

You first need projext#next installed, then try using the new projext inspect command for a bundled target.

And of course...

npm test
# or
yarn test

[coveralls]

Pull Request Test Coverage Report for Build 45

• 20 of 20 (100.0%) changed or added relevant lines in 6 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 43:	0.0%
Covered Lines:	1344
Relevant Lines:	1344

---

💛 - Coveralls