Merge pull request #624 from buschtoens/drop-ember-below-4.12

Drop support for Ember versions older than 4.12

.npmrc

@@ -7,3 +7,6 @@ auto-install-peers=false
 # we want true isolation,
 # if a dependency is not declared, we want an error
 resolve-peers-from-workspace-root=false
+
+# Fail if there is a missing or invalid peer dependency in the tree.
+strict-peer-dependencies=true

ember-lazy-mount/package.json

@@ -31,8 +31,7 @@
   },
   "dependencies": {
     "@ember/test-waiters": "^3.1.0",
-    "@embroider/addon-shim": "^1.8.7",
-    "@embroider/macros": "^1.16.5",
+    "@embroider/addon-shim": "^1.8.9",
     "decorator-transforms": "^2.0.0"
   },
   "devDependencies": {
@@ -55,7 +54,7 @@
     "rollup": "^4.18.1"
   },
   "peerDependencies": {
-    "ember-source": ">= 4.0.0"
+    "ember-source": "^4.12.0 || >= 5"
   },
   "publishConfig": {
     "registry": "https://registry.npmjs.org"