Add PHP 5.6 minimum dependency. Refs #17, #18

2 files changed, 232 insertions, 117 deletions

diff --git a/composer.json b/composer.json
index 6a05ca6..372f871 100644
--- a/composer.json
+++ b/composer.json
@@ -10,6 +10,7 @@
         }
     ],
     "require": {
+        "php": ">=5.6",
         "ext-mysqli": "*"
     },
     "require-dev": {
diff --git a/composer.lock b/composer.lock
index 35824be..83186ae 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "10573a0f4adc26bcdacc648a1f834402",
-    "content-hash": "0f39e6f3703dcc15ba6fa976bebf7df4",
+    "content-hash": "cea2ad5e972c54896b93098964b5f7a3",
     "packages": [],
     "packages-dev": [
         {
@@ -60,35 +59,39 @@
                 "constructor",
                 "instantiate"
             ],
-            "time": "2015-06-14 21:17:01"
+            "time": "2015-06-14T21:17:01+00:00"
         },
         {
             "name": "friendsofphp/php-cs-fixer",
-            "version": "v1.11.4",
+            "version": "v1.12.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/FriendsOfPHP/PHP-CS-Fixer.git",
-                "reference": "eeb280e909834603ffe03524dbe0066e77c83084"
+                "reference": "78a820c16d13f593303511461eefa939502fb2de"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/eeb280e909834603ffe03524dbe0066e77c83084",
-                "reference": "eeb280e909834603ffe03524dbe0066e77c83084",
+                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/78a820c16d13f593303511461eefa939502fb2de",
+                "reference": "78a820c16d13f593303511461eefa939502fb2de",
                 "shasum": ""
             },
             "require": {
                 "ext-tokenizer": "*",
-                "php": ">=5.3.6",
-                "sebastian/diff": "~1.1",
-                "symfony/console": "~2.3|~3.0",
-                "symfony/event-dispatcher": "~2.1|~3.0",
-                "symfony/filesystem": "~2.1|~3.0",
-                "symfony/finder": "~2.1|~3.0",
-                "symfony/process": "~2.3|~3.0",
-                "symfony/stopwatch": "~2.5|~3.0"
+                "php": "^5.3.6 || >=7.0 <7.2",
+                "sebastian/diff": "^1.1",
+                "symfony/console": "^2.3 || ^3.0",
+                "symfony/event-dispatcher": "^2.1 || ^3.0",
+                "symfony/filesystem": "^2.1 || ^3.0",
+                "symfony/finder": "^2.1 || ^3.0",
+                "symfony/process": "^2.3 || ^3.0",
+                "symfony/stopwatch": "^2.5 || ^3.0"
+            },
+            "conflict": {
+                "hhvm": "<3.9"
             },
             "require-dev": {
-                "satooshi/php-coveralls": "0.7.*@dev"
+                "phpunit/phpunit": "^4.5|^5",
+                "satooshi/php-coveralls": "^1.0"
             },
             "bin": [
                 "php-cs-fixer"
@@ -114,20 +117,20 @@
                 }
             ],
             "description": "A tool to automatically fix PHP code style",
-            "time": "2016-06-07 07:51:27"
+            "time": "2016-10-30T12:07:10+00:00"
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.5.1",
+            "version": "1.5.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "a8773992b362b58498eed24bf85005f363c34771"
+                "reference": "399c1f9781e222f6eb6cc238796f5200d1b7f108"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/a8773992b362b58498eed24bf85005f363c34771",
-                "reference": "a8773992b362b58498eed24bf85005f363c34771",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/399c1f9781e222f6eb6cc238796f5200d1b7f108",
+                "reference": "399c1f9781e222f6eb6cc238796f5200d1b7f108",
                 "shasum": ""
             },
             "require": {
@@ -156,7 +159,7 @@
                 "object",
                 "object graph"
             ],
-            "time": "2015-11-20 12:04:31"
+            "time": "2016-10-31T17:19:45+00:00"
         },
         {
             "name": "phpdocumentor/reflection-common",
@@ -210,20 +213,20 @@
                 "reflection",
                 "static analysis"
             ],
-            "time": "2015-12-27 11:43:31"
+            "time": "2015-12-27T11:43:31+00:00"
         },
         {
             "name": "phpdocumentor/reflection-docblock",
-            "version": "3.1.0",
+            "version": "3.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
-                "reference": "9270140b940ff02e58ec577c237274e92cd40cdd"
+                "reference": "8331b5efe816ae05461b7ca1e721c01b46bafb3e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/9270140b940ff02e58ec577c237274e92cd40cdd",
-                "reference": "9270140b940ff02e58ec577c237274e92cd40cdd",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/8331b5efe816ae05461b7ca1e721c01b46bafb3e",
+                "reference": "8331b5efe816ae05461b7ca1e721c01b46bafb3e",
                 "shasum": ""
             },
             "require": {
@@ -255,7 +258,7 @@
                 }
             ],
             "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
-            "time": "2016-06-10 09:48:41"
+            "time": "2016-09-30T07:12:33+00:00"
         },
         {
             "name": "phpdocumentor/type-resolver",
@@ -302,7 +305,7 @@
                     "email": "me@mikevanriel.com"
                 }
             ],
-            "time": "2016-06-10 07:14:17"
+            "time": "2016-06-10T07:14:17+00:00"
         },
         {
             "name": "phpspec/prophecy",
@@ -364,20 +367,20 @@
                 "spy",
                 "stub"
             ],
-            "time": "2016-06-07 08:13:47"
+            "time": "2016-06-07T08:13:47+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "4.0.0",
+            "version": "4.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "900370c81280cc0d942ffbc5912d80464eaee7e9"
+                "reference": "6cba06ff75a1a63a71033e1a01b89056f3af1e8d"
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-                "reference": "900370c81280cc0d942ffbc5912d80464eaee7e9",
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+                "reference": "6cba06ff75a1a63a71033e1a01b89056f3af1e8d",
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             "require": {
@@ -386,7 +389,7 @@
                 "phpunit/php-text-template": "~1.2",
                 "phpunit/php-token-stream": "^1.4.2",
                 "sebastian/code-unit-reverse-lookup": "~1.0",
-                "sebastian/environment": "^1.3.2",
+                "sebastian/environment": "^1.3.2 || ^2.0",
                 "sebastian/version": "~1.0|~2.0"
             },
             "require-dev": {
@@ -427,7 +430,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2016-06-03 05:03:56"
+            "time": "2016-11-01T05:06:24+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -474,7 +477,7 @@
                 "filesystem",
                 "iterator"
             ],
-            "time": "2015-06-21 13:08:43"
+            "time": "2015-06-21T13:08:43+00:00"
         },
         {
             "name": "phpunit/php-text-template",
@@ -515,7 +518,7 @@
             "keywords": [
                 "template"
             ],
-            "time": "2015-06-21 13:50:34"
+            "time": "2015-06-21T13:50:34+00:00"
         },
         {
             "name": "phpunit/php-timer",
@@ -559,7 +562,7 @@
             "keywords": [
                 "timer"
             ],
-            "time": "2016-05-12 18:03:57"
+            "time": "2016-05-12T18:03:57+00:00"
         },
         {
             "name": "phpunit/php-token-stream",
@@ -608,32 +611,32 @@
             "keywords": [
                 "tokenizer"
             ],
-            "time": "2015-09-15 10:49:45"
+            "time": "2015-09-15T10:49:45+00:00"
         },
         {
             "name": "phpunit/phpunit",
-            "version": "5.4.6",
+            "version": "5.6.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
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+                "reference": "cd13b23ac5a519a4708e00736c26ee0bb28b2e01"
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+                "reference": "cd13b23ac5a519a4708e00736c26ee0bb28b2e01",
                 "shasum": ""
             },
             "require": {
                 "ext-dom": "*",
                 "ext-json": "*",
-                "ext-pcre": "*",
-                "ext-reflection": "*",
-                "ext-spl": "*",
+                "ext-libxml": "*",
+                "ext-mbstring": "*",
+                "ext-xml": "*",
                 "myclabs/deep-copy": "~1.3",
                 "php": "^5.6 || ^7.0",
                 "phpspec/prophecy": "^1.3.1",
-                "phpunit/php-code-coverage": "^4.0",
+                "phpunit/php-code-coverage": "^4.0.1",
                 "phpunit/php-file-iterator": "~1.4",
                 "phpunit/php-text-template": "~1.2",
                 "phpunit/php-timer": "^1.0.6",
@@ -651,7 +654,11 @@
             "conflict": {
                 "phpdocumentor/reflection-docblock": "3.0.2"
             },
+            "require-dev": {
+                "ext-pdo": "*"
+            },
             "suggest": {
+                "ext-xdebug": "*",
                 "phpunit/php-invoker": "~1.1"
             },
             "bin": [
@@ -660,7 +667,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.4.x-dev"
+                    "dev-master": "5.6.x-dev"
                 }
             },
             "autoload": {
@@ -686,20 +693,20 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2016-06-16 06:01:15"
+            "time": "2016-10-25T07:40:25+00:00"
         },
         {
             "name": "phpunit/phpunit-mock-objects",
-            "version": "3.2.3",
+            "version": "3.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit-mock-objects.git",
-                "reference": "b13d0d9426ced06958bd32104653526a6c998a52"
+                "reference": "238d7a2723bce689c79eeac9c7d5e1d623bb9dc2"
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-                "reference": "b13d0d9426ced06958bd32104653526a6c998a52",
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@@ -745,7 +752,54 @@
                 "mock",
                 "xunit"
             ],
-            "time": "2016-06-12 07:37:26"
+            "time": "2016-10-09T07:01:45+00:00"
+        },
+        {
+            "name": "psr/log",
+            "version": "1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d"
+            },
+            "dist": {
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+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Log\\": "Psr/Log/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
+            "keywords": [
+                "log",
+                "psr",
+                "psr-3"
+            ],
+            "time": "2016-10-10T12:19:37+00:00"
         },
         {
             "name": "sebastian/code-unit-reverse-lookup",
@@ -790,7 +844,7 @@
             ],
             "description": "Looks up which function or method a line of code belongs to",
             "homepage": "https://github.com/sebastianbergmann/code-unit-reverse-lookup/",
-            "time": "2016-02-13 06:45:14"
+            "time": "2016-02-13T06:45:14+00:00"
         },
         {
             "name": "sebastian/comparator",
@@ -854,7 +908,7 @@
                 "compare",
                 "equality"
             ],
-            "time": "2015-07-26 15:48:44"
+            "time": "2015-07-26T15:48:44+00:00"
         },
         {
             "name": "sebastian/diff",
@@ -906,27 +960,27 @@
             "keywords": [
                 "diff"
             ],
-            "time": "2015-12-08 07:14:41"
+            "time": "2015-12-08T07:14:41+00:00"
         },
         {
             "name": "sebastian/environment",
-            "version": "1.3.7",
+            "version": "1.3.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/environment.git",
-                "reference": "4e8f0da10ac5802913afc151413bc8c53b6c2716"
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+                "reference": "be2c607e43ce4c89ecd60e75c6a85c126e754aea",
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-                "php": ">=5.3.3"
+                "php": "^5.3.3 || ^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.4"
+                "phpunit/phpunit": "^4.8 || ^5.0"
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             "extra": {
@@ -956,7 +1010,7 @@
                 "environment",
                 "hhvm"
             ],
-            "time": "2016-05-17 03:18:57"
+            "time": "2016-08-18T05:49:44+00:00"
         },
         {
             "name": "sebastian/exporter",
@@ -1023,7 +1077,7 @@
                 "export",
                 "exporter"
             ],
-            "time": "2016-06-17 09:04:28"
+            "time": "2016-06-17T09:04:28+00:00"
         },
         {
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@@ -1074,7 +1128,7 @@
             "keywords": [
                 "global state"
             ],
-            "time": "2015-10-12 03:26:01"
+            "time": "2015-10-12T03:26:01+00:00"
         },
         {
             "name": "sebastian/object-enumerator",
@@ -1120,7 +1174,7 @@
             ],
             "description": "Traverses array structures and object graphs to enumerate all referenced objects",
             "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
-            "time": "2016-01-28 13:25:10"
+            "time": "2016-01-28T13:25:10+00:00"
         },
         {
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@@ -1173,7 +1227,7 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
-            "time": "2015-11-11 19:50:13"
+            "time": "2015-11-11T19:50:13+00:00"
         },
         {
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@@ -1215,7 +1269,7 @@
             ],
             "description": "Provides a list of PHP built-in functions that operate on resources",
             "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
-            "time": "2015-07-28 20:34:47"
+            "time": "2015-07-28T20:34:47+00:00"
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         {
             "name": "sebastian/version",
@@ -1258,20 +1312,20 @@
             ],
             "description": "Library that helps with managing the version number of Git-hosted PHP projects",
             "homepage": "https://github.com/sebastianbergmann/version",
-            "time": "2016-02-04 12:56:52"
+            "time": "2016-02-04T12:56:52+00:00"
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "2.6.1",
+            "version": "2.7.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/squizlabs/PHP_CodeSniffer.git",
-                "reference": "fb72ed32f8418db5e7770be1653e62e0d6f5dd3d"
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@@ -1336,24 +1390,25 @@
                 "phpcs",
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             ],
-            "time": "2016-05-30 22:24:32"
+            "time": "2016-09-01T23:53:02+00:00"
         },
         {
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-            "version": "v3.1.2",
+            "version": "v3.1.6",
             "source": {
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                 "url": "https://github.com/symfony/console.git",
-                "reference": "747154aa69b0f83cd02fc9aa554836dee417631a"
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             "require": {
                 "php": ">=5.5.9",
+                "symfony/debug": "~2.8|~3.0",
                 "symfony/polyfill-mbstring": "~1.0"
             },
             "require-dev": {
@@ -1396,20 +1451,77 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2016-06-29 07:02:31"
+            "time": "2016-10-06T01:44:51+00:00"
+        },
+        {
+            "name": "symfony/debug",
+            "version": "v3.1.6",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/debug.git",
+                "reference": "e2b3f74a67fc928adc3c1b9027f73e1bc01190a8"
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