fluent-sequence: Add fluent as peer dep

Author: stasm

fluent-sequence/CHANGELOG.md

@@ -5,6 +5,11 @@
   - Rename `mapContextSync` to `mapBundleSync`.
   - Rename `mapContextAsync` to `mapBundleAsync`.
 
+  - Declare `fluent` as peer dependency.
+
+    `fluent-sequence` works well with any `fluent` version of `0.4.0` or
+    above.
+
 ## fluent-sequence 0.1.0 (August 17, 2018)
 
 The initial release based on `fluent` 0.7.0.

fluent-sequence/package.json

@@ -33,5 +33,8 @@
   },
   "devDependencies": {
     "cached-iterable": "^0.2.1"
+  },
+  "peerDependencies": {
+    "fluent": ">= 0.4.0"
   }
 }