Support/Ignore build pre-release label and build metadata

[amblp]

Hi - Since the fancy-log module started to use parse-node-version, we are seeing the following error when running gulp:

17:42:35 + npm test
17:42:35 
17:42:35 > my-app@1.0.0 test /path/to/test
17:42:35 > gulp
17:42:35 
17:42:35 /path/to/test/node_modules/parse-node-version/index.js:6
17:42:35     throw new Error('Unable to parse: ' + version);
17:42:35     ^
17:42:35 
17:42:35 Error: Unable to parse: v10.15.0+0-b20181231T20014594
17:42:35     at parseNodeVersion (/path/to/test/node_modules/parse-node-version/index.js:6:11)
17:42:35     at Object.<anonymous> (/path/to/test/node_modules/fancy-log/index.js:7:48)
17:42:35     at Module._compile (internal/modules/cjs/loader.js:689:30)
17:42:35     at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
17:42:35     at Module.load (internal/modules/cjs/loader.js:599:32)
17:42:35     at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
17:42:35     at Function.Module._load (internal/modules/cjs/loader.js:530:3)
17:42:35     at Module.require (internal/modules/cjs/loader.js:637:17)
17:42:35     at require (internal/modules/cjs/helpers.js:22:18)
17:42:35     at Object.module.exports [as log] (/path/to/test/node_modules/gulp-util/lib/log.js:10:20)

As you can see, this module fails to parse "v10.15.0+0-b20181231T20014594"
We're using a version of node that has been built with the --tag option (https://github.com/nodejs/node/blob/55e0ad9ae690f6d73b0caff7b813eb4d61195b94/configure.py#L330-L333).

The pre-release label and build metadata (as per semver.org) would need to be either ignored, or parsed appropriately.