Merge pull request #386 from nspcc-dev/drop-go-1.11-support

update minimum supported version of Go to 1.12

.circleci/config.yml

@@ -3,11 +3,6 @@ orbs:
   codecov: codecov/codecov@1.0.5
 
 executors:
-  go1_11:
-    docker:
-      - image: circleci/golang:1.11
-        environment:
-          GO111MODULE: "on"
   go1_12:
     docker:
       - image: circleci/golang:1.12
@@ -54,14 +49,6 @@ jobs:
           name: go-vet
           command: go vet ./...
 
-  test_1_11:
-    working_directory: /go/src/github.com/CityOfZion/neo-go
-    executor: go1_11
-    steps:
-      - checkout
-      - gomod
-      - run: go test -v -race ./...
-
   test_1_12:
     working_directory: /go/src/github.com/CityOfZion/neo-go
     executor: go1_12
@@ -123,10 +110,6 @@ workflows:
           filters:
             tags:
               only: v/[0-9]+\.[0-9]+\.[0-9]+/
-      - test_1_11:
-          filters:
-            tags:
-              only: v/[0-9]+\.[0-9]+\.[0-9]+/
       - test_1_12:
           filters:
             tags:

.travis.yml

@@ -1,6 +1,5 @@
 language: go
 go:
-  - 1.11.x
   - 1.12.x
 env:
   - GO111MODULE=on

README.md

@@ -31,7 +31,7 @@ A complete toolkit for the NEO blockchain, including:
 
 ## Installation
 
-Go: 1.11+
+Go: 1.12+
 
 Install dependencies.