Restrict base package version and cabal additions

There are issues with ghc 8.2 and 8.4,
see https://github.com/PostgREST/postgrest/issues/1109

README.md

@@ -6,6 +6,7 @@
 </a>
 [![Join the chat at https://gitter.im/begriffs/postgrest](https://img.shields.io/badge/gitter-join%20chat%20%E2%86%92-brightgreen.svg)](https://gitter.im/begriffs/postgrest)
 [![Docs](https://img.shields.io/badge/docs-latest-brightgreen.svg?style=flat)](http://postgrest.org)
+[![Hackage docs](https://img.shields.io/hackage/v/postgrest.svg?label=hackage)](http://hackage.haskell.org/package/postgrest)
 [![Docker Stars](https://img.shields.io/docker/pulls/postgrest/postgrest.svg)](https://hub.docker.com/r/postgrest/postgrest/)
 [![Donate](https://img.shields.io/badge/patreon-donate-orange.svg?colorB=F96854)](https://www.patreon.com/postgrest)
 

postgrest.cabal

@@ -7,8 +7,9 @@ synopsis:              REST API for any Postgres database
 license:               MIT
 license-file:          LICENSE
 author:                Joe Nelson, Adam Baker
-homepage:              https://github.com/PostgREST/postgrest
-maintainer:            cred+github@begriffs.com
+homepage:              https://postgrest.org
+maintainer:            Steve Chávez <stevechavezast@gmail.com>
+bug-reports:           https://github.com/PostgREST/postgrest/issues
 category:              Web
 build-type:            Simple
 cabal-version:         >=1.10
@@ -30,7 +31,7 @@ executable postgrest
     "-with-rtsopts=-N -I2"
   default-language:    Haskell2010
   build-depends:       auto-update
-                     , base
+                     , base >= 4.8 && < 4.10
                      , hasql
                      , hasql-pool
                      , postgrest
@@ -51,7 +52,7 @@ library
   default-extensions:  OverloadedStrings, QuasiQuotes, NoImplicitPrelude
   build-depends:       aeson
                      , ansi-wl-pprint
-                     , base >= 4.8 && < 6
+                     , base >= 4.8 && < 4.10
                      , base64-bytestring
                      , bytestring
                      , case-insensitive
@@ -143,7 +144,7 @@ Test-Suite spec
                      , aeson-qq
                      , async
                      , auto-update
-                     , base
+                     , base >= 4.8 && < 4.10
                      , bytestring
                      , base64-bytestring
                      , case-insensitive