FIX: include .js and check changes

Rakefile

@@ -1,10 +1,12 @@
 README = "readme.txt"
-SRC = ["prg-bib.php"]
+SRC = ["prg-bib.php", "resize-iframe.js", README]
 GIT_TAG = `git describe --tag --exact-match`.chomp
 README_TAG = /^Stable tag: *(.*) *$/.match(open(README).read)[1]
 ZIP = "prg-bib-#{README_TAG}.zip"
 raise "tag mismatch: #{GIT_TAG}(git), #{README_TAG}(#{README})" \
       unless GIT_TAG == README_TAG
+changes=`git status --porcelain --untracked-files=no`.chomp
+raise "there are changes: #{changes}" unless changes.empty?
 
 file ZIP => SRC do
   dirname = File.basename(Dir.pwd)

readme.txt

@@ -3,7 +3,7 @@ Contributors: masuhara
 Tags: bibtex, bibliography, citation
 Requires at least: 5.2
 Tested up to: 6.6.1
-Stable tag: v0.1.2-alpha
+Stable tag: v0.1.3-alpha
 Requires PHP: 7.2
 License: GPL v2 or later
 License URI: https://www.gnu.org/licenses/gpl-2.0.html
@@ -22,6 +22,9 @@ Usage
 
 == Changelog ==
 
+- v0.1.3-alpha
+  FIX: .js and readme files are included.
+
 - v0.1.2-alpha
   Another test release with a feature to build a release archive.