Bump version to 1.2.0 & update changelog

Author: mrcasual

README.md

@@ -426,7 +426,7 @@ You can override the default path using the `--po-header-template-path` CLI opti
 
 ### `config/openai-pricing.json`
 
-Contains pricing information for OpenAI models (as of May 2025) used for cost estimation. This file is automatically loaded and used to calculate translation costs.
+Contains pricing information for OpenAI models (as of April 2026) used for cost estimation. This file is automatically loaded and used to calculate translation costs.
 
 ---
 

package.json

@@ -27,6 +27,14 @@
 	},
 	"type": "module",
 	"main": "potomatic",
+	"files": [
+		"potomatic",
+		"src/",
+		"config/",
+		"CHANGELOG.md",
+		"LICENSE.md",
+		"README.md"
+	],
 	"bin": {
 		"potomatic": "potomatic"
 	},