Strict field for JsonRpcClient data type (#95)

Bump stack LTS version

README.md

@@ -7,7 +7,7 @@ The Haskell Ethereum API which implements the [Generic JSON RPC](https://github.
 [![Build Status](https://travis-ci.org/airalab/hs-web3.svg?branch=master)](https://travis-ci.org/airalab/hs-web3)
 [![Hackage Matrix](https://matrix.hackage.haskell.org/api/v2/packages/web3/badge)](https://matrix.hackage.haskell.org/package/web3)
 [![Hackage](https://img.shields.io/hackage/v/web3.svg)](http://hackage.haskell.org/package/web3)
-[![LTS-13](http://stackage.org/package/web3/badge/lts-13)](http://stackage.org/lts-13/package/web3)
+[![LTS-14](http://stackage.org/package/web3/badge/lts-14)](http://stackage.org/lts-14/package/web3)
 [![nightly](http://stackage.org/package/web3/badge/nightly)](http://stackage.org/nightly/package/web3)
 [![Code Triagers](https://www.codetriage.com/airalab/hs-web3/badges/users.svg)](https://www.codetriage.com/airalab/hs-web3)
 ![BSD3 License](http://img.shields.io/badge/license-BSD3-brightgreen.svg)

src/Network/Ethereum/Api/Provider.hs

@@ -1,7 +1,6 @@
 {-# LANGUAGE DeriveGeneric              #-}
 {-# LANGUAGE FlexibleInstances          #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
-{-# LANGUAGE MultiParamTypeClasses      #-}
 
 -- |
 -- Module      :  Network.Ethereum.Api.Provider

src/Network/JsonRpc/TinyClient.hs

@@ -88,8 +88,8 @@ type JsonRpcM m = (MonadIO m, MonadThrow m, MonadState JsonRpcClient m)
 
 -- | JSON-RPC client state vars.
 data JsonRpcClient = JsonRpcClient
-    { _jsonRpcManager :: Manager    -- ^ HTTP connection manager.
-    , _jsonRpcServer  :: String     -- ^ Remote server URI.
+    { _jsonRpcManager :: !Manager    -- ^ HTTP connection manager.
+    , _jsonRpcServer  :: !String     -- ^ Remote server URI.
     }
 
 $(makeLenses ''JsonRpcClient)

stack.yaml

@@ -1,5 +1,5 @@
 # Resolver to choose a 'specific' stackage snapshot or a compiler version.
-resolver: lts-13.21
+resolver: lts-14.6
 
 # User packages to be built.
 packages: