Added CHANGELOG

.chglog/CHANGELOG.tpl.md

+{{ if .Versions -}}
+<a name="unreleased"></a>
+## [Unreleased]
+{{ if .Unreleased.CommitGroups -}}
+{{ range .Unreleased.CommitGroups -}}
+### {{ .Title }}
+{{ range .Commits -}}
+- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
+{{ end }}
+{{ end -}}
+{{ else }}
+{{ range .Unreleased.Commits -}}
+- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
+{{ end }}
+{{ end -}}
+{{ end -}}
+
+{{ range .Versions }}
+<a name="{{ .Tag.Name }}"></a>
+## {{ if .Tag.Previous }}[{{ .Tag.Name }}]{{ else }}{{ .Tag.Name }}{{ end }} - {{ datetime "2006-01-02" .Tag.Date }}
+{{ if .CommitGroups -}}
+{{ range .CommitGroups -}}
+### {{ .Title }}
+{{ range .Commits -}}
+- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
+{{ end }}
+{{ end -}}
+{{ else }}
+{{ range .Commits -}}
+- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
+{{ end }}
+{{ end -}}
+
+{{- if .NoteGroups -}}
+{{ range .NoteGroups -}}
+### {{ .Title }}
+{{ range .Notes }}
+{{ .Body }}
+{{ end }}
+{{ end -}}
+{{ end -}}
+{{ end -}}
+
+{{- if .Versions }}
+[Unreleased]: {{ .Info.RepositoryURL }}/compare/{{ $latest := index .Versions 0 }}{{ $latest.Tag.Name }}...HEAD
+{{ range .Versions -}}
+{{ if .Tag.Previous -}}
+[{{ .Tag.Name }}]: {{ $.Info.RepositoryURL }}/compare/{{ .Tag.Previous.Name }}...{{ .Tag.Name }}
+{{ end -}}
+{{ end -}}
+{{ end -}}
\ No newline at end of file

.chglog/config.yml

+style: github
+template: CHANGELOG.tpl.md
+info:
+  title: CHANGELOG
+  repository_url: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance
+options:
+  header:
+    pattern: "^(.*)$"
+    pattern_maps:
+      - Subject

CHANGELOG.md

+<a name="unreleased"></a>
+## [Unreleased]
+
+
+
+<a name="v1.22.0"></a>
+## [v1.22.0] - 2019-05-20
+
+- Update module to the current version ([#88](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/88))
+
+
+<a name="v1.21.0"></a>
+## [v1.21.0] - 2019-03-22
+
+- Fix formatting
+- examples/basic/main.tf: Add usage of "root_block_device" ([#18](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/18)) ([#65](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/65))
+
+
+<a name="v1.20.0"></a>
+## [v1.20.0] - 2019-03-22
+
+- Fix formatting
+- main.tf: Make number of instances created configurable, defaulting to 1 ([#64](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/64))
+- Add missing required field ([#81](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/81))
+
+
+<a name="v1.19.0"></a>
+## [v1.19.0] - 2019-03-01
+
+- Fixed readme after [#76](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/76)
+- network_interface_id Attribute Removal ([#76](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/76))
+
+
+<a name="v1.18.0"></a>
+## [v1.18.0] - 2019-02-27
+
+- fix count variables are only valid within resources ([#72](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/72))
+
+
+<a name="v1.17.0"></a>
+## [v1.17.0] - 2019-02-25
+
+- fix call to local.instance_name ([#71](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/71))
+
+
+<a name="v1.16.0"></a>
+## [v1.16.0] - 2019-02-25
+
+- Fixed readme
+- Ability to append numerical suffix even to 1 instance ([#70](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/70))
+
+
+<a name="v1.15.0"></a>
+## [v1.15.0] - 2019-02-21
+
+- Allow multiple subnet ids ([#67](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/67))
+
+
+<a name="v1.14.0"></a>
+## [v1.14.0] - 2019-01-26
+
+- Tags should be possible to override (fixed [#53](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/53)) ([#66](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/66))
+- fix typo ([#61](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/61))
+
+
+<a name="v1.13.0"></a>
+## [v1.13.0] - 2018-10-31
+
+- Include the module version and some code formatting ([#52](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/52))
+
+
+<a name="v1.12.0"></a>
+## [v1.12.0] - 2018-10-06
+
+- Fixed [#51](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/51). t2 and t3 instances can be unlimited
+
+
+<a name="v1.11.0"></a>
+## [v1.11.0] - 2018-09-04
+
+- Added example of EBS volume attachment (related to [#46](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/46)) ([#47](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/47))
+- Ignore changes in the ebs_block_device ([#46](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/46))
+
+
+<a name="v1.10.0"></a>
+## [v1.10.0] - 2018-08-18
+
+- [master]: Narrow t2 selection criteria. ([#44](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/44))
+
+
+<a name="v1.9.0"></a>
+## [v1.9.0] - 2018-06-08
+
+- Fixed t2-unlimited bug (related issue [#35](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/35)) ([#37](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/37))
+
+
+<a name="v1.8.0"></a>
+## [v1.8.0] - 2018-06-04
+
+- Added support for CPU credits ([#35](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/35))
+
+
+<a name="v1.7.0"></a>
+## [v1.7.0] - 2018-06-02
+
+- Added encrypted AMI info ([#34](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/34))
+
+
+<a name="v1.6.0"></a>
+## [v1.6.0] - 2018-05-16
+
+- Added pre-commit hook to autogenerate terraform-docs ([#33](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/33))
+
+
+<a name="v1.5.0"></a>
+## [v1.5.0] - 2018-04-04
+
+- Minor formatting fix
+- Merge pull request [#26](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/26) from otassetti/master
+- Modify tag name management to add -%d suffixe only if instance_count > 1
+
+
+<a name="v1.4.0"></a>
+## [v1.4.0] - 2018-04-04
+
+- Merge pull request [#27](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/27) from Normo/master
+- Stop ignoring changes in vpc_security_group_ids
+
+
+<a name="v1.3.0"></a>
+## [v1.3.0] - 2018-03-06
+
+- Merge pull request [#25](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/25) from terraform-aws-modules/renamed-count
+- Renamed count to instance_count (fixes [#23](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/23))
+- Merge pull request [#24](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/24) from mhd999/fix/readme
+- Fix: add missing variable to the usage example
+
+
+<a name="v1.2.1"></a>
+## [v1.2.1] - 2018-03-01
+
+- Merge pull request [#21](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/21) from terraform-aws-modules/added-eip-to-example
+- Added aws_eip to example and pre-commit hooks
+
+
+<a name="v1.2.0"></a>
+## [v1.2.0] - 2018-01-19
+
+- Merge pull request [#14](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/14) from 2solt/master
+- Add tags to output variables
+
+
+<a name="v1.1.0"></a>
+## [v1.1.0] - 2017-12-08
+
+- Make module idempotent by requiring subnet_id and ignore changes in several arguments (fixes [#10](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/10))
+
+
+<a name="v1.0.4"></a>
+## [v1.0.4] - 2017-11-21
+
+- Removed placement_group from outputs
+
+
+<a name="v1.0.3"></a>
+## [v1.0.3] - 2017-11-15
+
+- Merge pull request [#7](https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/issues/7) from apparentlymart/patch-1
+- Fix incorrect subnet_id output expression
+- Updated example with all-icmp security group rule
+
+
+<a name="v1.0.2"></a>
+## [v1.0.2] - 2017-10-13
+
+- Added example with security-group module
+
+
+<a name="v1.0.1"></a>
+## [v1.0.1] - 2017-09-14
+
+- Updated example and made security group required
+
+
+<a name="v1.0.0"></a>
+## v1.0.0 - 2017-09-12
+
+- Updated repo name
+- Updated README
+- Added complete code with example and READMEs
+- Initial commit
+
+
+[Unreleased]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.22.0...HEAD
+[v1.22.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.21.0...v1.22.0
+[v1.21.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.20.0...v1.21.0
+[v1.20.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.19.0...v1.20.0
+[v1.19.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.18.0...v1.19.0
+[v1.18.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.17.0...v1.18.0
+[v1.17.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.16.0...v1.17.0
+[v1.16.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.15.0...v1.16.0
+[v1.15.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.14.0...v1.15.0
+[v1.14.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.13.0...v1.14.0
+[v1.13.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.12.0...v1.13.0
+[v1.12.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.11.0...v1.12.0
+[v1.11.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.10.0...v1.11.0
+[v1.10.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.9.0...v1.10.0
+[v1.9.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.8.0...v1.9.0
+[v1.8.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.7.0...v1.8.0
+[v1.7.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.6.0...v1.7.0
+[v1.6.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.5.0...v1.6.0
+[v1.5.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.4.0...v1.5.0
+[v1.4.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.3.0...v1.4.0
+[v1.3.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.2.1...v1.3.0
+[v1.2.1]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.2.0...v1.2.1
+[v1.2.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.1.0...v1.2.0
+[v1.1.0]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.0.4...v1.1.0
+[v1.0.4]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.0.3...v1.0.4
+[v1.0.3]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.0.2...v1.0.3
+[v1.0.2]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.0.1...v1.0.2
+[v1.0.1]: https://github.com/terraform-aws-modules/terraform-aws-ec2-instance/compare/v1.0.0...v1.0.1

Makefile

+.PHONY: changelog release
+
+changelog:
+	git-chglog -o CHANGELOG.md --next-tag `semtag final -s minor -o`
+
+release:
+	semtag final -s minor

README.md

@@ -6,12 +6,18 @@ These types of resources are supported:
 
 * [EC2 instance](https://www.terraform.io/docs/providers/aws/r/instance.html)
 
+## Terraform versions
+
+Terraform 0.12. Pin module version to `~> v2.0`. Submit pull-requests to `master` branch.
+
+Terraform 0.11. Pin module version to `~> v1.0`. Submit pull-requests to `terraform011` branch.
+
 ## Usage
 
 ```hcl
 module "ec2_cluster" {
   source                 = "terraform-aws-modules/ec2-instance/aws"
-  version                = "1.21.0"
+  version                = "1.22.0"
 
   name                   = "my-cluster"
   instance_count         = 5