Update Composer dependencies to latest

[danielbachhuber]

Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 0 installs, 15 updates, 2 removals
  - Removing symfony/debug (v3.4.12)
  - Removing psr/log (1.0.2)
  - Updating symfony/polyfill-ctype (v1.8.0 => v1.9.0): Loading from cache
  - Updating symfony/yaml (v3.4.12 => v4.1.4): Loading from cache
  - Updating symfony/polyfill-mbstring (v1.8.0 => v1.9.0): Loading from cache
  - Updating symfony/translation (v3.4.12 => v4.1.4): Loading from cache
  - Updating symfony/event-dispatcher (v3.4.12 => v3.4.15):  Checking out b2e1f19280
  - Updating symfony/dependency-injection (v3.4.12 => v4.1.4): Loading from cache
  - Updating symfony/console (v3.4.12 => v4.1.4): Loading from cache
  - Updating symfony/filesystem (v3.4.12 => v4.1.4): Loading from cache
  - Updating symfony/config (v3.4.12 => v4.1.4): Loading from cache
  - Updating symfony/class-loader (v3.4.12 => v3.4.15): Loading from cache
  - Updating behat/behat (v3.4.3 => v3.5.0): Loading from cache
  - Updating symfony/dom-crawler (v3.4.12 => v4.1.4): Loading from cache
  - Updating symfony/css-selector (v3.4.12 => v3.4.15): Loading from cache
  - Updating symfony/browser-kit (v3.4.12 => v4.1.4): Loading from cache
  - Updating fabpot/goutte (v3.2.2 => v3.2.3): Loading from cache
Writing lock file
Generating autoload files

[danielbachhuber]

@ataylorme Are you fine updating the tested versions to PHP 7.1?

[ataylorme]

@danielbachhuber I am okay with this as the default PHP version for WordPress sites on Pantheon is 7.2.

That being said if the Symfony dependencies require PHP 7.1 and we are dropping older PHP support then we should make a new release for 2.x and document PHP 7.1 as a requirement for the 2.x version

[danielbachhuber]

That being said if the Symfony dependencies require PHP 7.1 and we are dropping older PHP support then we should make a new release for 2.x and document PHP 7.1 as a requirement for the 2.x version

Works for me. Do you want to take care of this and release?

[ataylorme]

I can take care of cutting the release but I don't have bandwidth until Friday or next week at the earliest. Anything else you want to get into a release?

I would also like to get a +1 from @joshkoenig on dropping support for PHP < 7.1 and doing a major release.

[ataylorme]

Anything else you want to get into a release?

Some candidates could be #353, #359, #347, #206 and #205

[danielbachhuber]

I can take care of cutting the release but I don't have bandwidth until Friday or next week at the earliest. Anything else you want to get into a release?

Ok, let's do early next week then. I've assigned myself to #353, #347, #206 and will flag you for review when they're ready.

[ataylorme]

Sounds good. I changed the 1.5.1 milestone to 2.0.0 and added those issues to it.

[danielbachhuber]

Closing in favor of #379 which includes the Solarium update.