Move "good" badge helpers from lib/ to services/ (#3101)

This moves a few helpers from `lib/` to `services/`:

build-status.js
build-status.spec.js
color-formatters.js
color-formatters.spec.js
contributor-count.js
licenses.js
licenses.spec.js
php-version.js
php-version.spec.js
text-formatters.js
text-formatters.spec.js
version.js
version.spec.js

And one from `lib/` to `core/`:

unhandled-rejection.spec.js

The diff is long, but the changes are straightforward.

Ref #2832

services/php-version.spec.js

@@ -0,0 +1,76 @@
+'use strict'
+
+const { test, given } = require('sazerac')
+const { compare, minorVersion, versionReduction } = require('./php-version')
+
+const phpReleases = [
+  '5.0',
+  '5.1',
+  '5.2',
+  '5.3',
+  '5.4',
+  '5.5',
+  '5.6',
+  '7.0',
+  '7.1',
+  '7.2',
+]
+
+describe('Text PHP version', function() {
+  test(minorVersion, () => {
+    given('7').expect('7.0')
+    given('7.1').expect('7.1')
+    given('5.3.3').expect('5.3')
+    given('hhvm').expect('')
+  })
+
+  test(versionReduction, () => {
+    given(['5.3', '5.4', '5.5'], phpReleases).expect('5.3 - 5.5')
+    given(['5.4', '5.5', '5.6', '7.0', '7.1'], phpReleases).expect('5.4 - 7.1')
+    given(['5.5', '5.6', '7.0', '7.1', '7.2'], phpReleases).expect('>= 5.5')
+    given(['5.5', '5.6', '7.1', '7.2'], phpReleases).expect(
+      '5.5, 5.6, 7.1, 7.2'
+    )
+    given(['7.0', '7.1', '7.2'], phpReleases).expect('>= 7')
+    given(
+      ['5.0', '5.1', '5.2', '5.3', '5.4', '5.5', '5.6', '7.0', '7.1', '7.2'],
+      phpReleases
+    ).expect('>= 5')
+    given(['7.1', '7.2'], phpReleases).expect('>= 7.1')
+    given(['7.1'], phpReleases).expect('7.1')
+    given(['8.1'], phpReleases).expect('')
+    given([]).expect('')
+  })
+})
+
+describe('Composer version comparison', function() {
+  test(compare, () => {
+    // composer version scheme ordering
+    given('0.9.0', '1.0.0-alpha').expect(-1)
+    given('1.0.0-alpha', '1.0.0-alpha2').expect(-1)
+    given('1.0.0-alpha2', '1.0.0-beta').expect(-1)
+    given('1.0.0-beta', '1.0.0-beta2').expect(-1)
+    given('1.0.0-beta2', '1.0.0-RC').expect(-1)
+    given('1.0.0-RC', '1.0.0-RC2').expect(-1)
+    given('1.0.0-RC2', '1.0.0').expect(-1)
+    given('1.0.0', '1.0.0-patch').expect(-1)
+    given('1.0.0-patch', '1.0.0-dev').expect(-1)
+    given('1.0.0-dev', '1.0.1').expect(-1)
+    given('1.0.1', '1.0.x-dev').expect(-1)
+
+    // short versions should compare equal to long versions
+    given('1.0.0-p', '1.0.0-patch').expect(0)
+    given('1.0.0-a', '1.0.0-alpha').expect(0)
+    given('1.0.0-a2', '1.0.0-alpha2').expect(0)
+    given('1.0.0-b', '1.0.0-beta').expect(0)
+    given('1.0.0-b2', '1.0.0-beta2').expect(0)
+
+    // numeric suffixes
+    given('1.0.0-b1', '1.0.0-b2').expect(-1)
+    given('1.0.0-b10', '1.0.0-b11').expect(-1)
+    given('1.0.0-a1', '1.0.0-a2').expect(-1)
+    given('1.0.0-a10', '1.0.0-a11').expect(-1)
+    given('1.0.0-RC1', '1.0.0-RC2').expect(-1)
+    given('1.0.0-RC10', '1.0.0-RC11').expect(-1)
+  })
+})