abi-gen: Include templates in published tarball (#2315)

* abi-gen: Include templates in published tarball

* abi-gen: update CHANGELOG

* abi-gen/package.json: explicitly include code

Apparently when you include a "files" section, it by default only
includes the code directly referenced by the package.json.  (For this
package, it was including the lib/src/index.js referenced by "main", and
the bin/abi-gen.js referenced by "bin", but no other *.js files, nor any
*.d.ts files.)

packages/abi-gen/CHANGELOG.json

@@ -1,6 +1,6 @@
 [
     {
-        "version": "4.5.0-beta.0",
+        "version": "4.4.0-beta.0",
         "changes": [
             {
                 "note": "In Python wrappers, accept string arguments to bytes parameters",
@@ -18,18 +18,17 @@
                 "note": "In Python wrappers, fix bug with casting some bytes objects using bytes.fromhex()",
                 "pr": 2284
             },
-            {
-                "note": "Command-line argument network-id has changed to chain-id",
-                "pr": 2313
-            }
-        ]
-    },
-    {
-        "version": "4.4.0-beta.0",
-        "changes": [
             {
                 "note": "Add `getSelector` method to all functions",
                 "pr": 2224
+            },
+            {
+                "note": "Command-line argument network-id has changed to chain-id",
+                "pr": 2313
+            },
+            {
+                "note": "Fix templates not being included in published tarball",
+                "pr": 2315
             }
         ]
     },

packages/abi-gen/package.json

@@ -110,5 +110,6 @@
     },
     "publishConfig": {
         "access": "public"
-    }
+    },
+    "files": ["templates/*", "*.js", "*.ts", "*.map"]
 }