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+---
+title: Releases
+---
+
+# Releases
+
+## Hakyll 4.9.4.0
+
+- Make `./site check` concurrent
+- Bump directory dependency to 1.3
+- Bump time dependency to 1.7
+- Bump vector dependency to 0.12
+
+## Hakyll 4.9.3.0
+
+- Add a `Hakyll.Web.Redirect` module (contribution by gwern)
+- Expose `Hakyll.Commands`
+- Fix the exit code behaviour of `./site check`
+
+## Hakyll 4.9.2.0
+
+- Fix integer fields in YAML metadata (Fix by Nikolaos S. Papaspyrou)
+- Bump pandoc dependency to 1.19
+
+## Hakyll 4.9.1.0
+
+- Allow optparse-applicative 0.13, QuickCheck 2.9, and pandoc 1.18
+  (contributions by Chris Wong and Felix Yan)
+- Fix extra test files for packaging source files (contribution by Julien
+  Langlois)
+
+## Hakyll 4.9.0.0
+
+This release switches over some dependencies to alternatives, in order to clean
+up some stuff and build on a wider variety of setups (stack/cabal).
+
+- Move from `test-framework` to `tasty`
+- Fix feed generator when item contains CDATA (contribution by Yann Esposito)
+- Fix CompressCSS to not modify string constants (contribution by Nicole Rauch)
+- Fix YAML dependency issue (contribution by Jens Peterson)
+- Move from `cmdargs` to `optparse-applicative` (contribution by sk3r)
+- Allow for trimming whitespace in templates (contribution by Sam Davis)
+- Improve error messages for template parsing (contribution by Lorenzo
+  Tabacchini)
+- Improvements to the installation instructions (contribution by Thomas Koch)
+- Move from `snap` to `warp` for preview servier (contribution by Arguggi)
+- Fix error in CompressCSS (contribution by Luca Molteni)
+- Move example from XHTML to HTML5 (contribution by Peter Doherty)
+- Make errors in check less verbose (contribution by Jan Tojnar)
+- Work on building with GHC 8.0.1 (contribution by Rohan Jain)
+
+## Hakyll 4.8.3.2
+
+This release is compatible with GHC 8.0.1, although `previewServer` might not
+work yet on some setups.
+
+- Allow data-default 0.7, pandoc-citeproc 0.10, and tagsoup 0.14 (contributions
+  by Paul van der Walt and Felix Yan)
+- Allow binary 0.8, process 1.4, time 1.6 (contribution by Sergei Trofimovich)
+- Fix issue with `.metadata` file reading
+
+## Hakyll 4.8.3.1
+
+- Bump scientific dependency to 0.3.4
+
+## Hakyll 4.8.3.0
+
+- Fix another compilation issue wrt. orphan `Show` instance from regex-tdfa
+  (contribution by Sergei Trofimovich)
+
+## Hakyll 4.8.2.0
+
+- Fix compilation issue wrt. orphan `Show` instance from regex-tdfa
+
+## Hakyll 4.8.1.0
+
+- Fix compilation on windows
+
+## Hakyll 4.8.0.1
+
+- Fix issue with test suite
+
+## Hakyll 4.8.0.0
+
+- Support full YAML in page metadata
+- Bump data-default dependency to 0.6
+- Add snippet field for literal includes in templates (contribution by Nicolas
+  Mattia)
+
+## Hakyll 4.7.5.2
+
+- Bump pandoc dependency to 1.17 (contribution by Felix Yan)
+- Fix `unixFilter` documentation (contribution by Richard Cook)
+- Bump example posts (contribution by Andrew Barchuk)
+- Add a template compiler that only uses the template body (contribution by
+  Bergi)
+
+## Hakyll 4.7.5.1
+
+- Bump pandoc and pandoc-citeproc dependencies to 1.16 and 0.9 respectively
+
+## Hakyll 4.7.5.0
+
+- Expose templating engine
+- Fix bug in feed context precedence (contribution by Yuriy Syrovetskiy)
+- Bump http-types dependency to 0.9
+
+## Hakyll 4.7.4.0
+
+- Expose `getItemModificationTime`
+
+## Hakyll 4.7.3.1
+
+- Bump pandoc-citeproc dependency to 0.8
+
+## Hakyll 4.7.3.0
+
+- Bump HUnit dependency to 1.3
+- Add `poster` as an URL attribute (contribution by vtduncan)
+- Prevent `hakyll-init` from generating directories with leading hyphen
+  (contribution by Javran Cheng)
+
+## Hakyll 4.7.2.3
+
+- Fix time dependency in tests
+
+## Hakyll 4.7.2.2
+
+- Relax time dependency
+
+## Hakyll 4.7.2.1
+
+- Bump fsnotify dependency to 0.2
+
+## Hakyll 4.7.2.0
+
+- Improve documentation of `getResourceXXX` functions (contribution by Matthias
+  C. M. Troffaes)
+- Allow for empty templates
+- Bump pandoc dependency to 1.15
+
+## Hakyll 4.7.1.0
+
+- Drop old-time, old-locale, time-locale-compat dependencies
+- Add convenicence `pandocBiblioCompiler` (contribution by
+  Matthias C. M. Troffaes)
+- Add support for mediawiki (contribution by Chen Lei)
+
+## Hakyll 4.7.0.0
+
+- Bump pandoc to 1.14. This will break a lot of sites: since the pandoc parser
+  might now return an error message, it is ran inside the `Compiler` monad where
+  we can nicely handle the error.
+
+## Hakyll 4.6.9.0
+
+- Let caller decide exit (fix by Erik Dominikus)
+- Bump pandoc-citeproc dependency
+
+## Hakyll 4.6.8.1
+
+- Fix test suite dependencies
+
+## Hakyll 4.6.8.0
+
+- Fix building on GHC 7.10 (fix by Charles Strahan)
+- Add support for a custom teaser separator (contribution by Tom Sydney
+  Kerckhove)
+- Let Pandoc handle DocBook files (contribution by Joshua SImmons)
+
+## Hakyll 4.6.7.1
+
+- Bump dependencies
+
+## Hakyll 4.6.7.0
+
+- Bump dependencies
+- Fix bug where hakyll-init would create a file called `name.cabal.cabal` (fix
+  by Hans-Peter Deifel)
+
+## Hakyll 4.6.6.0
+
+- Fix compilation error when preview server is disabled (fix by Magnus Therning)
+- Add author name by default to RSS feeds (contribution by Calen Pennington)
+
+## Hakyll 4.6.5.0
+
+- Bump dependencies
+- Fix garbled "Listening on 0.0.0.0:8000" message
+- Add `boolField` (contribution by Ferenc Wágner)
+
+## Hakyll 4.6.4.0
+
+- Fix another dependency handling bug when using snapshots
+- Add `matchMetadata` for examining metadata when defining rules
+
+## Hakyll 4.6.3.0
+
+- Fix dependency handling bug
+
+## Hakyll 4.6.2.0
+
+- Loosen `binary` dependency
+- Make dependency handling more granular so you can depend on specific snapshots
+  of an item
+
+## Hakyll 4.6.1.0
+
+- Bump `fsnotify` and `pandoc-citeproc` dependencies
+- Rewrite polling code a bit
+
+## Hakyll 4.6.0.0
+
+- Added `listFieldWith` function
+- Improved `rulesExtraDependencies` behaviour
+- Changed function syntax in templates from `$foo arg1 arg2$` to
+  `$foo("arg1", "arg2")$`
+- Support parsing date from directory names in addition to file names
+
+## Hakyll 4.5.5.0
+
+- Fix Binary instances for `pandoc` and `pandoc-citeproc`
+- Fix `network-uri` dependency issue
+
+## Hakyll 4.5.4.0
+
+- Fix issue with HTML entities when running `withUrls` and `demoteHeaders`.
+- Generate a cabal file for the initialised site.
+- Add pagination support.
+
+## Hakyll 4.5.3.0
+
+- Bump Pandoc to 1.12.4 to include the org-mode reader.
+
+## Hakyll 4.5.2.0
+
+- Fix rebuilding everything issue with latest directory (contribution by Jorge
+  Israel Peña)
+- Fix issue with `toSiteRoot` (contribution by Izzy Cecil)
+- Fix issue with tag dependencies, slightly improve caching
+
+## Hakyll 4.5.0.0
+
+- Fix issue with syntax highlighting and line numbers (contribution by Adelbert
+  Chang)
+- Improve documentation for `Context` (contribution by Daniil Frumin)
+- Added `IsString` instance for `Template`
+- Added the `pandocCompilerWithTransformM` function (contribution by Daniil
+  Frumin)
+- Make `./site check` return the right exit code (contribution by Andres Loeh)
+- Use OS threads to make `./site watch` work nicely on Windows (contribution by
+  Simonas Kazlauskas)
+- Make the `unixFilter` function work better on windows by calling `shell`
+  (contribution by Collin J. Doering)
+- Add a command-line flag to bind on a user-specified host (contribution by
+  chrisdotcode)
+
+## Hakyll 4.4.3.0
+
+- Fix issue when using `metadataRoute` after other custom routes
+
+## Hakyll 4.4.2.0
+
+- Fix issue where Hakyll would not detect a change if a `.metadata` file was
+  deleted
+
+## Hakyll 4.4.1.0
+
+- Use Pandoc 1.12 highlighting by default
+
+## Hakyll 4.4.0.0
+
+- Update to work with Pandoc 1.12. This changes the type of `readPandocBibilio`:
+  the `CSL` argument is no longer optional (contribution by Jorge Israel Peña)
+
+- Fix incorrect output of `toSiteRoot` on windows (contribution by Saeid
+  Al-Wazzan)
+
+- Add a preview port option to `Configuration` (contribution by Jorge Israel
+  Peña)
+
+- Add `watch` command that polls for changes but does not necessarily launch a
+  server (contribution by Eric Stolten)
+
+- Generalise type of `metadataField`
+
+- Fix issue where metadata was not correctly loaded when using versions
+
+## Hakyll 4.3.3.0
+
+- Re-add the `functionField` function
+
+## Hakyll 4.3.2.0
+
+- Re-add the `mapContext` function
+
+- Unescape internal URLs when using `./site check` (contribution by Marc-Antoine
+  Perennou)
+
+## Hakyll 4.3.1.0
+
+- Make teasers undefined if no `<!--more-->` comment is found
+
+- Sanitize tag URLs (contribution by Simonas Kazlauskas)
+
+## Hakyll 4.3.0.0
+
+- Add conditionals, partials and for loops to the template system (includes a
+  contribution by Ivan N. Veselov)
+
+- Improvements to the preview functionality on windows (contribution by Jorge
+  Israel Peña)
+
+- Add pagination support (contribution by Anton Dubovik)
+
+- Slight speedup for the Hakyll cache (contribution by justnoxx)
+
+- Add teaser functionality (contribution by Ivan N. Veselov)
+
+- Make `./site check` work with scheme-relative URLs (contribution by Simonas
+  Kazlauskas)
+
+- The `./site deploy` command can now be customized with Haskell code
+  (contribution by Samuel Tardieu)
+
+- Use `hsnotify` for proper polling instead of sleep loop on all platforms
+  (contribution by Simonas Kazlauskas)
+
+- More useful debug info available
+
+## Hakyll 4.2.2.0
+
+- Fix issue with `Alternative` instance of `Compiler`
+
+## Hakyll 4.2.1.1
+
+*March 9, 2013*
+
+- Make `http-conduit` dependency optional by adding a `checkExternal` cabal flag
+
+## Hakyll 4.2.1.0
+
+*March 7, 2013*
+
+- Fix issue where `copyFileCompiler` ignored `providerDirectory`
+
+## Hakyll 4.2.0.0
+
+*March 7, 2013*
+
+- Read second extension for `.lhs`, e.g. `.md.lhs` or `.tex.lhs` (contribution
+  by Alexander Vershilov)
+
+- Speedup initialization by using modification times instead of hashing files
+
+- Speedup initialization with a rewritten resource provider
+
+- Fix `./site check` not working with sites that require a user agent (e.g.
+  <http://www.wikipedia.org/>)
+
+- Change `chronological` and `recentFirst` to actually look at the dates of
+  items. This changes their types from:
+
+        chronological, recentFirst :: [Item a] -> [Item a]
+
+    to:
+
+        chronological, recentFirst
+            :: MonadMetadata m => [Item a] -> m [Item a]
+
+    (contribution by Simonas Kazlauskas)
+
+- Add `metadataRoute`, so it is now possible to use metadata when determining
+  routes
+
+- Improve metadata parser for multiline metadata fields (contribution by Peter
+  Jones)
+
+- Add the `getMetadataField` utility
+
+## Hakyll 4.1.4.0
+
+*January 26, 2013*
+
+- Export the flexible `renderTags` function
+
+## Hakyll 4.1.3.0
+
+*January 26, 2013*
+
+- Export the constructor of the `Tags` datatype
+
+## Hakyll 4.1.2.0
+
+*January 20, 2013*
+
+- Fix an issue where a dependency cycle would lead to infinite recursion/stack
+  overflow
+
+## Hakyll 4.1.1.0
+
+*January 20, 2013*
+
+- Fix an issue regarding `relativizeUrls` expanding `<meta />` to
+  `<meta></meta>`
+
+## Hakyll 4.1.0.0
+
+*January 20, 2013*
+
+Update to use Pandoc 1.10, this requires changes to your `site.hs` if you're
+using custom Pandoc options or the `Hakyll.Web.Pandoc.Biblio` module.
+
+- `defaultHakyllParserState` renamed to `defaultHakyllReaderOptions`
+
+- The type of `readPandocBiblio` changed
+
+Because of the many changes, this release is no longer compatible with Pandoc
+1.9.
+
+## Hakyll 4.0.0.0
+
+*January 16, 2013*
+
+The Initial release of Hakyll 4, see
+[this blogpost](http://jaspervdj.be/posts/2013-01-16-hakyll-4.0.html) and
+[the migration guide](/tutorials/hakyll-3-to-hakyll4-migration-guide.html) for
+an overview of changes.