Add support for Firefox for Android in manifest.json.

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/browser_specific_settings
> To support Firefox for Android without specifying a version range,
> the gecko_android subkey must be an empty object, i.e.
> "gecko_android": {}. Otherwise, the extension is only made available
> on desktop Firefox.

extension/changelog.json

@@ -48,7 +48,8 @@
 					"message": "Adjust revive request prices to be accurate. Prices are no longer the same for every revive provider.",
 					"contributor": "DeKleineKobini"
 				},
-				{ "message": "Add links to the external services, where applicable.", "contributor": "DeKleineKobini" }
+				{ "message": "Add links to the external services, where applicable.", "contributor": "DeKleineKobini" },
+				{ "message": "Add support for Firefox for Android in manifest.json.", "contributor": "TheFoxMan" }
 			],
 			"removed": [
 				{ "message": "Removed bazaar prices from the popup, as they are set to be removed from the API.", "contributor": "DeKleineKobini" },

extension/manifest.json

@@ -65,7 +65,7 @@
 		}
 	],
 	"options_ui": { "page": "pages/settings/settings.html", "open_in_tab": true },
-	"browser_specific_settings": { "gecko": { "id": "{3754707b-1aa4-4c6f-96e7-5b1cdc1de5f9}" } },
+	"browser_specific_settings": { "gecko": { "id": "{3754707b-1aa4-4c6f-96e7-5b1cdc1de5f9}" }, "gecko_android": {} },
 	"content_scripts": [
 		{
 			"matches": ["https://www.torn.com/*.php*"],