Maintenance release v0.9.2 — modernize project tooling

Replace custom Indexer system with standard gemspec, Travis CI with
GitHub Actions, and Assembly/Reapfile with Rakefile. Simplify version
handling. Fix typos, update URLs to HTTPS, move site from gh-pages
to docs/, and clean up obsolete files.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: trans

.github/workflows/test.yml

@@ -0,0 +1,21 @@
+name: Test
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby: ['3.1', '3.2', '3.3', '3.4']
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - run: bundle exec rake test

.gitignore

@@ -1,10 +1,7 @@
-.reap/digest
 .yardoc
 doc
 log
-pkg/*.gem
-pkg/*.gz
+pkg
 tmp
-DEMO*
-web
-work/sandbox
+Gemfile.lock
+*.gem

.index

@@ -1,2 +1,3 @@
-source "http://rubygems.org"
-gemspec :path=>'pkg'
+source "https://rubygems.org"
+
+gemspec

.ruby

@@ -1,5 +1,21 @@
 # RELEASE HISTORY
 
+## 0.9.2 / 2026-03-31
+
+Maintenance release. Modernized project tooling and cleaned up documentation.
+
+Changes:
+
+* Replace custom Indexer system with standard gemspec.
+* Replace Travis CI with GitHub Actions.
+* Replace Assembly/Reapfile with Rakefile.
+* Simplify version handling (VERSION constant in module).
+* Fix typos and update URLs to HTTPS.
+* Move site from gh-pages to docs/.
+* Remove obsolete files.
+* Clean up .gitignore.
+
+
 ## 0.9.1 / 2012-03-17
 
 Thie release fixes some evaluation scope issues, improves how omit and skip