Dependencies for release

[phil-davis]

Apply the dependency bumps from PR #145 to the release-1.0.0 branch.

composer update
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 0 installs, 3 updates, 0 removals
  - Updating psr/log (1.1.0 => 1.1.1): Loading from cache
  - Updating elasticsearch/elasticsearch (v5.3.2 => v5.4.0): Downloading (100%)         
  - Updating ruflin/elastica (5.3.5 => 5.3.6): Downloading (100%)         
Writing lock file
Generating autoload files

and

composer update
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 0 installs, 1 update, 0 removals
  - Updating psr/log (1.1.1 => 1.1.2): Loading from cache
Writing lock file
Generating autoload files

[phil-davis]

I think it would be good to have the latest patch releases, particularly of the "elastic*" packages. They should be better :)

[codecov[bot]]

Codecov Report

Merging #151 into release-1.0.0 will not change coverage. The diff coverage is n/a.

@@               Coverage Diff                @@
##             release-1.0.0     #151   +/-   ##
================================================
  Coverage            19.59%   19.59%           
  Complexity             271      271           
================================================
  Files                   24       24           
  Lines                 1230     1230           
================================================
  Hits                   241      241           
  Misses                 989      989

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