Require Go 1.8, update documentation to reflect that.

.travis.yml

@@ -5,12 +5,10 @@ language: go
 
 matrix:
   include:
-  - go: 1.7.6
-    env: VIPS_VERSION=8.4.6
   - go: 1.8.7
-    env: VIPS_VERSION=8.5.9
+    env: VIPS_VERSION=8.4.6
   - go: 1.9.7
-    env: VIPS_VERSION=8.6.5
+    env: VIPS_VERSION=8.5.9
   - go: 1.10.3
     env: VIPS_VERSION=8.6.5
 

README.md

@@ -16,7 +16,7 @@ There's also API detail for Fotomat's [thumbnail](https://godoc.org/github.com/d
 License
 -------
 
-Copyright 2013, 2014, 2015, 2016, 2017 Aaron Hopkins and contributors
+Copyright 2013, 2014, 2015, 2016, 2017, 2018 Aaron Hopkins and contributors
 
 Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0
 

cmd/fotomat/version.go

@@ -2,5 +2,5 @@ package main
 
 const (
 	// FotomatVersion is updated by git-hooks/pre-commit
-	FotomatVersion = "2.8.243"
+	FotomatVersion = "2.8.244"
 )

doc/building.md

@@ -1,7 +1,7 @@
 Building:
 ========
 
-Install [Go](http://golang.org/doc/install), git, and
+Install [Go 1.8+](http://golang.org/doc/install), git, and
 [VIPS 8.4.6+](https://github.com/jcupitt/libvips/releases).
 
 If you haven't used Go before, first create a source tree for your Go code: