prepare next PR

- update CHANGELOG for new feature
- add repo housekeeping options (pre-commit hooks, gitattributes)

Author: kral2

.gitattributes

@@ -0,0 +1,3 @@
+*.txt    text eol=lf whitespace=blank-at-eol,-blank-at-eof,-space-before-tab,tab-in-indent,tabwidth=4
+*.md    text eol=lf whitespace=blank-at-eol,-blank-at-eof,-space-before-tab,tab-in-indent,tabwidth=4
+*.tf    text eol=lf whitespace=blank-at-eol,-blank-at-eof,-space-before-tab,tab-in-indent,tabwidth=4

.pre-commit-config.yaml

@@ -0,0 +1,16 @@
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v3.4.0 # Get the latest from: https://github.com/pre-commit/pre-commit-hooks/releases
+  hooks:
+    - id: trailing-whitespace
+      args: [--markdown-linebreak-ext=md]
+- repo: https://github.com/gruntwork-io/pre-commit
+  rev: v0.1.12 # Get the latest from: https://github.com/gruntwork-io/pre-commit/releases
+  hooks:
+    - id: terraform-validate
+    # - id: terraform-fmt #* this version of tf-fmt detect problem and fails. You have to run tf fmt yourself
+- repo: https://github.com/antonbabenko/pre-commit-terraform
+  rev: v1.45.0 # Get the latest from: https://github.com/antonbabenko/pre-commit-terraform/releases
+  hooks:
+    - id: terraform_docs
+    - id: terraform_fmt #* this version of tf-fmt actually runs fmt and fix files

CHANGELOG.md

@@ -12,6 +12,15 @@ Given a version number MAJOR.MINOR.PATCH:
 
 ## [UNRELEASED]
 
+Features:
+
+- add Flex instance shape support
+
+Repo maintenance:
+
+- add .gitattributes for consistent line ending and tab
+- add pre-commit configuration file
+
 ## 2.0.4 - 2021-02-13
 
 ### Changed