Update changelogs.

servant-client-core/CHANGELOG.md

@@ -1,6 +1,14 @@
 [The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-client-core/CHANGELOG.md)
 [Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
 
+0.18
+----
+
+### Significant changes
+
+- Support for ghc8.8 (#1318, #1326, #1327)
+
+
 0.17
 ----
 

servant-client/CHANGELOG.md

@@ -1,6 +1,14 @@
 [The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-client/CHANGELOG.md)
 [Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
 
+0.18
+----
+
+### Significant changes
+
+- Support for ghc8.8 (#1318, #1326, #1327)
+
+
 0.17
 ----
 

servant-http-streams/CHANGELOG.md

@@ -1,6 +1,14 @@
   [The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-http-streams/CHANGELOG.md)
 [Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
 
+0.18
+----
+
+### Significant changes
+
+- Support for ghc8.8 (#1318, #1326, #1327)
+
+
 0.17
 ----
 

servant-server/CHANGELOG.md

@@ -1,6 +1,17 @@
 [The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-server/CHANGELOG.md)
 [Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
 
+0.18
+----
+
+### Significant changes
+
+- Support for ghc8.8 (#1318, #1326, #1327)
+
+- Configurable error messages for automatic errors thrown by servant,
+  like "no route" or "could not parse json body" (#1312, #1326, #1327)
+
+
 0.17
 ----
 

servant/CHANGELOG.md

@@ -1,5 +1,25 @@
 [The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
 
+0.18
+----
+
+### Significant changes
+
+- Support for ghc8.8 (#1318, #1326, #1327)
+
+- Configurable error messages for automatic errors thrown by servant,
+  like "no route" or "could not parse json body" (#1312, #1326, #1327)
+
+### Other changes
+
+- Witness that a type-level natural number corresponds to a HTTP
+  status code (#1310)
+
+- Improve haddocs (#1279)
+
+- Dependency management (#1269, #1293, #1286, #1287)
+
+
 0.17
 ----