Update composer deps

composer.lock

@@ -64,16 +64,16 @@
         },
         {
             "name": "composer/semver",
-            "version": "1.4.2",
+            "version": "1.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/semver.git",
-                "reference": "c7cb9a2095a074d131b65a8a0cd294479d785573"
+                "reference": "46d9139568ccb8d9e7cdd4539cab7347568a5e2e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/semver/zipball/c7cb9a2095a074d131b65a8a0cd294479d785573",
-                "reference": "c7cb9a2095a074d131b65a8a0cd294479d785573",
+                "url": "https://api.github.com/repos/composer/semver/zipball/46d9139568ccb8d9e7cdd4539cab7347568a5e2e",
+                "reference": "46d9139568ccb8d9e7cdd4539cab7347568a5e2e",
                 "shasum": ""
             },
             "require": {
@@ -122,28 +122,27 @@
                 "validation",
                 "versioning"
             ],
-            "time": "2016-08-30T16:08:34+00:00"
+            "time": "2019-03-19T17:25:45+00:00"
         },
         {
             "name": "composer/spdx-licenses",
-            "version": "1.5.0",
+            "version": "1.5.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/spdx-licenses.git",
-                "reference": "7a9556b22bd9d4df7cad89876b00af58ef20d3a2"
+                "reference": "a1aa51cf3ab838b83b0867b14e56fc20fbd55b3d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/spdx-licenses/zipball/7a9556b22bd9d4df7cad89876b00af58ef20d3a2",
-                "reference": "7a9556b22bd9d4df7cad89876b00af58ef20d3a2",
+                "url": "https://api.github.com/repos/composer/spdx-licenses/zipball/a1aa51cf3ab838b83b0867b14e56fc20fbd55b3d",
+                "reference": "a1aa51cf3ab838b83b0867b14e56fc20fbd55b3d",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.2 || ^7.0"
+                "php": "^5.3.2 || ^7.0 || ^8.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.5",
-                "phpunit/phpunit-mock-objects": "2.3.0 || ^3.0"
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || 6.5 - 7"
             },
             "type": "library",
             "extra": {
@@ -183,7 +182,7 @@
                 "spdx",
                 "validator"
             ],
-            "time": "2018-11-01T09:45:54+00:00"
+            "time": "2019-03-26T10:23:26+00:00"
         },
         {
             "name": "composer/xdebug-handler",
@@ -1360,6 +1359,7 @@
                 "mock",
                 "xunit"
             ],
+            "abandoned": true,
             "time": "2015-10-02T06:51:40+00:00"
         },
         {