Added ExponentialBackoffErrorHandler and accompanying test.

Added MicroSleepErrorHandler and accompanying test.

.gitignore

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+/vendor/
+/.*/

.travis.yml

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+notifications:
+  email: false
+
+sudo: false
+
+language: php
+
+php:
+  - 5.5
+  - 5.6
+  - 7.0
+
+install:
+  - alias composer=composer\ -n && composer selfupdate
+  - composer validate
+  - composer --prefer-source install
+  - composer --prefer-source require satooshi/php-coveralls
+
+script:
+  - bin/test --coverage-clover=build/logs/clover.xml
+
+after_success:
+  - vendor/bin/coveralls -v

README.md

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+Retry
+=====
+
+[![Latest version][Version image]][Releases]
+[![Build status][Build image]][Build]
+[![Test coverage][Coverage image]][Coverage]
+[![Code style][Style image]][Style]
+
+Provides error handlers for [Retry][Retry].
+
+Requirements
+------------
+
+- [PHP 5.5](http://php.net/)
+- [Composer](https://getcomposer.org/)
+
+
+  [Releases]: https://github.com/ScriptFUSION/Retry-Error-Handlers/releases
+  [Version image]: https://poser.pugx.org/scriptfusion/retry-error-handlers/v/stable "Latest version"
+  [Build]: http://travis-ci.org/ScriptFUSION/Retry-Error-Handlers
+  [Build image]: https://travis-ci.org/ScriptFUSION/Retry-Error-Handlers.svg "Build status"
+  [Coverage]: https://coveralls.io/github/ScriptFUSION/Retry-Error-Handlers
+  [Coverage image]: https://coveralls.io/repos/ScriptFUSION/Retry-Error-Handlers/badge.svg "Test coverage"
+  [Style]: https://styleci.io/repos/63633635
+  [Style image]: https://styleci.io/repos/63633635/shield?style=flat "Code style"
+  [Retry]: https://github.com/ScriptFUSION/Retry 

bin/test

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+#!/usr/bin/env bash
+
+cd "$(dirname "$0")"/..
+
+vendor/bin/phpunit -c test "$@"

composer.json

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+{
+  "name": "scriptfusion/retry-error-handlers",
+  "description": "Error handlers for Retry.",
+  "authors": [
+    {
+      "name": "Bilge",
+      "email": "bilge@scriptfusion.com"
+    }
+  ],
+  "require": {
+    "scriptfusion/retry": "^1"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^4"
+  },
+  "autoload": {
+    "psr-4": {
+      "ScriptFUSION\\Retry\\": "src"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "ScriptFUSIONTest\\Retry\\": "test"
+    }
+  }
+}