Fix bigint dependency (#38)

* Switch back to the original BigInt library

I am now one of the maintainers of the original BigInt library and will
make sure that it is always supported on the newest Swift version and
also on Linux.

This is not a breaking change for most people as the imports stay the same (the module
name was the same) but may be for some if they explicitely depended on
the fork. Those people should switch back to the original library as I'm
dropping support for the fork in favour of the original one.

* Switch to xcode version 9.4 on travis

* Switch to iPhone 8 for testing

* Switch back to simulator 11.3

* Switch to iPhone X

* Print available devices on travis

* Change instruments to only run on OSX on travis

.swift-version

@@ -1 +1 @@
-4.1
+4.1.2

.travis.yml

@@ -13,11 +13,12 @@ dist: trusty
 language: generic
 sudo: required
 
-osx_image: xcode9.3beta
-xcode_sdk: iphonesimulator11.3
+osx_image: xcode9.4
+xcode_sdk: iphonesimulator11.4
 # cache: cocoapods
 # podfile: Example/Podfile
 before_install:
+  - if [ $TRAVIS_OS_NAME == "osx" ]; then instruments -s devices; fi
   - gem install cocoapods # Since Travis is not always on latest version
   - pod repo update
   - pod install --project-directory=Example
@@ -37,7 +38,7 @@ script:
   - while sleep 60; do echo "=====[ $SECONDS seconds still running ]====="; done &
   # Actual script
   - if [ $TRAVIS_OS_NAME == "osx" ]; then
-      set -o pipefail && xcodebuild test -enableCodeCoverage YES -workspace Example/Web3.xcworkspace -scheme Web3-Example -sdk iphonesimulator11.3 -destination 'platform=iOS Simulator,name=iPhone 6,OS=11.3' ONLY_ACTIVE_ARCH=YES | xcpretty;
+      set -o pipefail && xcodebuild test -enableCodeCoverage YES -workspace Example/Web3.xcworkspace -scheme Web3-Example -sdk iphonesimulator11.4 -destination 'platform=iOS Simulator,name=iPhone X,OS=11.4' ONLY_ACTIVE_ARCH=YES | xcpretty;
       pod lib lint --allow-warnings;
     fi
   - swift build

Cartfile

@@ -1,4 +1,4 @@
-github "Boilertalk/BigInt.swift" ~> 1.0
+github "attaswift/BigInt" ~> 3.1
 github "krzyzanowskim/CryptoSwift" ~> 0.8
 github "Boilertalk/secp256k1.swift" ~> 0.1
 github "mxcl/PromiseKit" ~> 6.0

Example/Podfile.lock

@@ -1,15 +1,17 @@
 PODS:
-  - BigInt.swift (1.0.0)
+  - BigInt (3.1.0):
+    - SipHash (~> 1.2)
   - CryptoSwift (0.9.0)
   - Nimble (7.0.3)
   - PromiseKit/CorePromise (6.2.4)
   - Quick (1.2.0)
   - secp256k1.swift (0.1.4)
+  - SipHash (1.2.2)
   - Web3 (0.2.1):
     - Web3/Core (= 0.2.1)
     - Web3/HTTPExtension (= 0.2.1)
   - Web3/Core (0.2.1):
-    - BigInt.swift (~> 1.0)
+    - BigInt (~> 3.1)
     - CryptoSwift (~> 0.8)
     - secp256k1.swift (~> 0.1)
   - Web3/HTTPExtension (0.2.1):
@@ -26,25 +28,27 @@ DEPENDENCIES:
 
 SPEC REPOS:
   https://github.com/cocoapods/specs.git:
-    - BigInt.swift
+    - BigInt
     - CryptoSwift
     - Nimble
     - PromiseKit
     - Quick
     - secp256k1.swift
+    - SipHash
 
 EXTERNAL SOURCES:
   Web3:
     :path: "../"
 
 SPEC CHECKSUMS:
-  BigInt.swift: 1e0ddf08d82166e72dfb0fa8d40301d273081afc
+  BigInt: 76b5dfdfa3e2e478d4ffdf161aeede5502e2742f
   CryptoSwift: bca8c5b653dcc2d9734409242a070ff53bafac86
   Nimble: 7f5a9c447a33002645a071bddafbfb24ea70e0ac
   PromiseKit: 625b1fc69944fc839503748101c5968cf54b527b
   Quick: 58d203b1c5e27fff7229c4c1ae445ad7069a7a08
   secp256k1.swift: a7e7a214f6db6ce5db32cc6b2b45e5c4dd633634
-  Web3: 302e96088450557de6a45f880214fc9e4bcfd356
+  SipHash: fad90a4683e420c52ef28063063dbbce248ea6d4
+  Web3: 85ae1f09ebc28399615c32e1951d132f70e3f5c2
 
 PODFILE CHECKSUM: 2f710184f832269e9555625936985a2bc3b69022