CI Overhaul

[aejnsn]

The build wasn't testing anything, thus the code coverage fell to 0%. We were running against Circle's PHPUnit 6, which has namespace changes from 4.x/5.x. I am guessing it broke down when Circle upgraded their image with PHPUnit 6.

This PR spans a bit far for my liking, but here I am submitting it. I've broken this into four commits with an explanation for each:

Upgrade to PHPUnit 6. - 662a8db
I added PHPUnit 6.x as a dev dependency and fixed breaking changes.

Fix Illuminate requirements. - 4cf906d
I don't know how this was ever running inside Laravel 5.1. With 5.1, this was happening:

Aarons-MacBook-Pro:temporal-models aaron$ composer update --prefer-lowest --prefer-dist --prefer-stable --no-suggest
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 1 install, 6 updates, 0 removals
  - Updating nesbot/carbon (1.20.0 => 1.19.0): Loading from cache
  - Installing danielstjules/stringy (1.8.0): Loading from cache
  - Updating illuminate/contracts (v5.2.0 => v5.1.1): Loading from cache
  - Updating illuminate/support (v5.2.0 => v5.1.1): Loading from cache
  - Updating illuminate/container (v5.2.0 => v5.1.1): Loading from cache
  - Updating illuminate/database (v5.2.0 => v5.1.41): Downloading (100%)         
  - Updating illuminate/events (v5.2.0 => v5.1.41): Downloading (100%)         
Package dflydev/markdown is abandoned, you should avoid using it. Use michelf/php-markdown instead.
Package guzzle/guzzle is abandoned, you should avoid using it. Use guzzlehttp/guzzle instead.
Writing lock file
Generating autoload files
Aarons-MacBook-Pro:temporal-models aaron$ vendor/bin/phpunit --filter=testItReceivesInvalidResultsFromInvalidScope
PHPUnit 6.0.0 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.1.4 with Xdebug 2.5.3
Configuration: /Users/aaron/Desktop/Development/temporal-models/phpunit.xml.dist

E                                                                   1 / 1 (100%)

Time: 146 ms, Memory: 8.00Mb

There was 1 error:

1) TemporalTest::testItReceivesInvalidResultsFromInvalidScope
Error: Call to a member function toArray() on string

/Users/aaron/Desktop/Development/temporal-models/tests/TemporalTest.php:391

ERRORS!
Tests: 1, Assertions: 0, Errors: 1.

Update dev dependencies. - a72c9ac
Mockery went 1.0, finally, and I think the php-coveralls/php-coveralls package is the official package (same underlying repo). However, swapping the Coveralls package doesn't fix the Package guzzle/guzzle is abandoned, you should avoid using it. Use guzzlehttp/guzzle instead. Check out php-coveralls/php-coveralls#203. If you can understand what its maintainer is trying to do, you're doing better than me.

Upgrade to CircleCI 2.0. - 098cdeb
I've removed circle.yml, adding .circleci/config.yml for 2.0. 4 jobs are configured--a lowest and latest set of dependencies on both PHP 7.0 and 7.1. I'd configure PHP 7.2 if Circle had an image--didn't want to get into using a non-Circle image. Circle's Docker images are wayyy heavy though, something like 1.5GB (I'm sure they cache) and their config format needs some polish. Coveralls should handle the coverage for parallel builds--seems to be working in my fork.

Check out the builds here:
https://circleci.com/gh/aejnsn/temporal-models/tree/ci-upgrade-fixes
https://coveralls.io/github/aejnsn/temporal-models

[joshforbes]

Thanks for this! 🙌