Make goreleaser release .zip artifacts, bump travis go version

.gitignore

@@ -16,3 +16,5 @@ config.ign.merged
 .terraform
 coverage.txt
 dist
+
+.idea

.goreleaser.yml

@@ -1,40 +1,32 @@
 # This is an example goreleaser.yaml file with some sane defaults.
 # Make sure to check the documentation at http://goreleaser.com
+project_name: terraform-provider-vagrant
 builds:
-  - binary: terraform-provider-vagrant_v{{ .Version }}
-    env:
-      - CGO_ENABLED=0
+  - binary: '{{ .ProjectName }}_{{ .Version }}'
+    flags:
+      - -trimpath
+    goarch:
+      - '386'
+      - amd64
+      - arm
+      - arm64
     goos:
       - darwin
       - freebsd
       - linux
-      - openbsd
-      - solaris
       - windows
-    goarch:
-      - 386
-      - amd64
-      - arm
     ignore:
-      - goos: darwin
-        goarch: 386
-      - goos: darwin
-        goarch: arm
-      - goos: openbsd
-        goarch: arm
-      - goos: solaris
-        goarch: 386
-      - goos: solaris
-        goarch: arm
-      - goos: windows
-        goarch: arm
-archive:
-  name_template: "{{ .ProjectName }}_v{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
-  format_overrides:
-    - goos: windows
-      format: zip
+      - goarch: '386'
+        goos: darwin
+    ldflags:
+      - -s -w -X version.ProviderVersion={{.Version}}
+    mod_timestamp: '{{ .CommitTimestamp }}'
+archives:
+  - name_template: '{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}'
+    format: zip
 checksum:
-  name_template: 'checksums.txt'
+  name_template: '{{ .ProjectName }}_{{ .Version }}_SHA256SUMS'
+  algorithm: sha256
 snapshot:
   name_template: "{{ .Tag }}-next"
 changelog:
@@ -43,3 +35,5 @@ changelog:
     exclude:
       - '^docs:'
       - '^test:'
+env:
+  - CGO_ENABLED=0

.travis.yml

@@ -1,4 +1,4 @@
 language: go
 
 go:
-  - 1.13
+  - 1.16