update to modern slate

Author: PeterHindes

.editorconfig

@@ -0,0 +1,22 @@
+---
+name: Report a Bug
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Bug Description**
+A clear and concise description of what the bug is and how to reproduce it.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Browser (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+**Last upstream Slate commit (run `git log --author="\(Robert Lord\)\|\(Matthew Peveler\)\|\(Mike Ralphson\)" | head -n 1`):**
+Put the commit hash here

.github/ISSUE_TEMPLATE/bug.md

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Questions, Ideas, Discussions
+    url: https://github.com/slatedocs/slate/discussions
+    about: Ask and answer questions, and propose new features.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,9 @@
+version: 2
+updates:
+- package-ecosystem: bundler
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10
+  target-branch: dev
+  versioning-strategy: increase-if-necessary

.github/ISSUE_TEMPLATE/start-here.md

@@ -0,0 +1,38 @@
+name: Build
+
+on:
+  push:
+    branches: [ '*' ]
+  pull_request:
+    branches: [ '*' ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        ruby-version: [2.6, 2.7, '3.0', 3.1, 3.2]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+
+    - uses: actions/cache@v3
+      with:
+        path: vendor/bundle
+        key: gems-${{ runner.os }}-${{ matrix.ruby-version }}-${{ hashFiles('**/Gemfile.lock') }}
+        restore-keys: |
+          gems-${{ runner.os }}-${{ matrix.ruby-version }}-
+          gems-${{ runner.os }}-
+
+    - run: bundle config set deployment 'true'
+    - name: bundle install
+      run: |
+        bundle config path vendor/bundle
+        bundle install --jobs 4 --retry 3
+
+    - run: bundle exec middleman build

.github/dependabot.yml

@@ -0,0 +1,44 @@
+name: Deploy
+
+on:
+  push:
+    branches: [ 'main' ]
+
+jobs:
+  deploy:
+    permissions:
+      contents: write
+
+    runs-on: ubuntu-latest
+    env:
+      ruby-version: 2.6
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ env.ruby-version }}
+
+    - uses: actions/cache@v3
+      with:
+        path: vendor/bundle
+        key: gems-${{ runner.os }}-${{ env.ruby-version }}-${{ hashFiles('**/Gemfile.lock') }}
+        restore-keys: |
+          gems-${{ runner.os }}-${{ env.ruby-version }}-
+          gems-${{ runner.os }}-
+
+    - run: bundle config set deployment 'true'
+    - name: bundle install
+      run: |
+        bundle config path vendor/bundle
+        bundle install --jobs 4 --retry 3
+
+    - run: bundle exec middleman build
+
+    - name: Deploy
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: ./build
+        keep_files: true

.github/workflows/build.yml

@@ -16,13 +16,12 @@ build/
 .cache
 .vagrant
 .sass-cache
-vendor/
 
 # YARD artifacts
 .yardoc
 _yardoc
 doc/
 .idea/
 
-source/.index.html.md.swp
-.gitignore.swp
+# Vagrant artifacts
+ubuntu-*-console.log

.github/workflows/deploy.yml

@@ -1,18 +1,177 @@
 # Changelog
 
+## Version 2.13.1
+
+*January 31, 2023*
+
+* Fix Vagrantfile gem install for ruby >= 2.6 (thanks @Cyb0rk)
+* Disable file watcher in run_build() for sake of qemu on arm64 (thanks @anapsix)
+* Expand deprecated git.io links to full url in docs (thanks @judge2020)
+* Add margin to paragraph following code-block on phones (thanks @tlhunter)
+* Bump nokogiri from 1.13.4 to 1.13.9
+* Bump rouge from 3.28.0 to 3.30.0
+* Bump redcarpet from 3.5.1 to 3.6.0
+* Bump middleman from 4.4.2 to 4.4.3
+* Bump middleman-syntax from 3.2.0 to 3.3.0
+* Bump webrick from 1.7.0 to 1.8.1
+
+## Version 2.13.0
+
+*April 22, 2022*
+
+* __Drop support for ruby 2.5__
+* Bump rouge from 3.26.1 to 3.28.0
+* Formally support ruby 3.1
+* Bump nokogiri from 1.12.5 to 1.13.4
+* Build docker images for multiple architectures (e.g. `aarch64`)
+* Remove `VOLUME` declaration from Dockerfile (thanks @aemengo)
+
+The security vulnerabilities reported against recent versions of nokogiri should not affect slate users with a regular setup.
+
+## Version 2.12.0
+
+*November 04, 2021*
+
+* Bump nokogiri from 1.12.3 to 1.12.5
+* Bump ffi from 1.15.0 to 1.15.4
+* Bump rouge from 3.26.0 to 3.26.1
+* Bump middleman from 4.4.0 to 4.4.2
+* Remove unnecessary files from docker images
+
+## Version 2.11.0
+
+*August 12, 2021*
+
+* __[Security]__ Bump addressable transitive dependency from 2.7.0 to 2.8.0
+* Support specifying custom meta tags in YAML front-matter
+* Bump nokogiri from 1.11.3 to 1.12.3 (minimum supported version is 1.11.4)
+* Bump middleman-autoprefixer from 2.10.1 to 3.0.0
+* Bump jquery from 3.5.1 to 3.6.0
+* Bump middleman from [`d180ca3`](https://github.com/middleman/middleman/commit/d180ca337202873f2601310c74ba2b6b4cf063ec) to 4.4.0
+
+## Version 2.10.0
+
+*April 13, 2021*
+
+* Add support for Ruby 3.0 (thanks @shaun-scale)
+* Add requirement for Git on installing dependencies
+* Bump nokogiri from 1.11.2 to 1.11.3
+* Bump middleman from 4.3.11 to [`d180ca3`](https://github.com/middleman/middleman/commit/d180ca337202873f2601310c74ba2b6b4cf063ec)
+
+## Version 2.9.2
+
+*March 30, 2021*
+
+* __[Security]__ Bump kramdown from 2.3.0 to 2.3.1
+* Bump nokogiri from 1.11.1 to 1.11.2
+
+## Version 2.9.1
+
+*February 27, 2021*
+
+* Fix Slate language tabs not working if localStorage is disabled
+
+## Version 2.9.0
+
+*January 19, 2021*
+
+* __Drop support for Ruby 2.3 and 2.4__
+* __[Security]__ Bump nokogiri from 1.10.10 to 1.11.1
+* __[Security]__ Bump redcarpet from 3.5.0 to 3.5.1
+* Specify slate is not supported on Ruby 3.x
+* Bump rouge from 3.24.0 to 3.26.0
+
+## Version 2.8.0
+
+*October 27, 2020*
+
+* Remove last trailing newline when using the copy code button
+* Rework docker image and make available at slatedocs/slate
+* Improve Dockerfile layout to improve caching (thanks @micvbang)
+* Bump rouge from 3.20 to 3.24
+* Bump nokogiri from 1.10.9 to 1.10.10
+* Bump middleman from 4.3.8 to 4.3.11
+* Bump lunr.js from 2.3.8 to 2.3.9
+
+## Version 2.7.1
+
+*August 13, 2020*
+
+* __[security]__ Bumped middleman from 4.3.7 to 4.3.8
+
+_Note_: Slate uses redcarpet, not kramdown, for rendering markdown to HTML, and so was unaffected by the security vulnerability in middleman.
+If you have changed slate to use kramdown, and with GFM, you may need to install the `kramdown-parser-gfm` gem.
+
+## Version 2.7.0
+
+*June 21, 2020*
+
+* __[security]__ Bumped rack in Gemfile.lock from 2.2.2 to 2.2.3
+* Bumped bundled jQuery from 3.2.1 to 3.5.1
+* Bumped bundled lunr from 0.5.7 to 2.3.8
+* Bumped imagesloaded from 3.1.8 to 4.1.4
+* Bumped rouge from 3.17.0 to 3.20.0
+* Bumped redcarpet from 3.4.0 to 3.5.0
+* Fix color of highlighted code being unreadable when printing page
+* Add clipboard icon for "Copy to Clipboard" functionality to code boxes (see note below)
+* Fix handling of ToC selectors that contain punctutation (thanks @gruis)
+* Fix language bar truncating languages that overflow screen width
+* Strip HTML tags from ToC title before displaying it in title bar in JS (backup to stripping done in Ruby code) (thanks @atic)
+
+To enable the new clipboard icon, you need to add `code_clipboard: true` to the frontmatter of source/index.html.md.
+See [this line](https://github.com/slatedocs/slate/blame/main/source/index.html.md#L19) for an example of usage.
+
+## Version 2.6.1
+
+*May 30, 2020*
+
+* __[security]__ update child dependency activesupport in Gemfile.lock to 5.4.2.3
+* Update Middleman in Gemfile.lock to 4.3.7
+* Replace Travis-CI with GitHub actions for continuous integration
+* Replace Spectrum with GitHub discussions
+
+## Version 2.6.0
+
+*May 18, 2020*
+
+__Note__: 2.5.0 was "pulled" due to a breaking bug discovered after release. It is recommended to skip it, and move straight to 2.6.0.
+
+* Fix large whitespace gap in middle column for sections with codeblocks
+* Fix highlighted code elements having a different background than rest of code block
+* Change JSON keys to have a different font color than their values
+* Disable asset hashing for woff and woff2 elements due to middleman bug breaking woff2 asset hashing in general
+* Move Dockerfile to Debian from Alpine
+* Converted repo to a [GitHub template](https://help.github.com/en/github/creating-cloning-and-archiving-repositories/creating-a-template-repository)
+* Update sassc to 2.3.0 in Gemfile.lock
+
+## Version 2.5.0
+
+*May 8, 2020*
+
+* __[security]__ update nokogiri to ~> 1.10.8
+* Update links in example docs to https://github.com/slatedocs/slate from https://github.com/lord/slate
+* Update LICENSE to include full Apache 2.0 text
+* Test slate against Ruby 2.5 and 2.6 on Travis-CI
+* Update Vagrantfile to use Ubuntu 18.04 (thanks @bradthurber)
+* Parse arguments and flags for deploy.sh on script start, instead of potentially after building source files
+* Install nodejs inside Vagrantfile (thanks @fernandoaguilar)
+* Add Dockerfile for running slate (thanks @redhatxl)
+* update middleman-syntax and rouge to ~>3.2
+* update middleman to 4.3.6
+
 ## Version 2.4.0
 
 *October 19, 2019*
 
 - Move repository from lord/slate to slatedocs/slate
 - Fix documentation to point at new repo link, thanks to [Arun](https://github.com/slash-arun), [Gustavo Gawryszewski](https://github.com/gawry), and [Daniel Korbit](https://github.com/danielkorbit)
 - Update `nokogiri` to 1.10.4
-- Update `ffi` in `Gemfile.lock` to fix security warnings, thanks to [Grey Baker](https://github.com/greysteil) and [jackmack](https://github.com/jakemack)
-- Update `rack` to 2.0.7 in `Gemfile.lock` to fix security warnings, thanks to [Grey Baker](https://github.com/greysteil) and [jackmack](https://github.com/jakemack)
-- Update middleman to `4.3` and relax constraints on middleman related gems, thanks to [jackmack](https://github.com/jakemack)
-- Add sass gem, thanks to [jackmack](https://github.com/jackmack)
+- Update `ffi` in `Gemfile.lock` to fix security warnings, thanks to [Grey Baker](https://github.com/greysteil) and [jakemack](https://github.com/jakemack)
+- Update `rack` to 2.0.7 in `Gemfile.lock` to fix security warnings, thanks to [Grey Baker](https://github.com/greysteil) and [jakemack](https://github.com/jakemack)
+- Update middleman to `4.3` and relax constraints on middleman related gems, thanks to [jakemack](https://github.com/jakemack)
+- Add sass gem, thanks to [jakemack](https://github.com/jakemack)
 - Activate `asset_cache` in middleman to improve cacheability of static files, thanks to [Sam Gilman](https://github.com/thenengah)
-- Update to using bundler 2 for `Gemfile.lock`, thanks to [jackmack](https://github.com/jakemack)
+- Update to using bundler 2 for `Gemfile.lock`, thanks to [jakemack](https://github.com/jakemack)
 
 ## Version 2.3.1