chore(release): Release version 0.4.0

[DanielMSchmidt]

0.4.0 (May 27, 2021)

Implemented enhancements

• Experimental Go Support #686
• Add Asset Construct #698
• Support sensitive variables #701
• Update python templates to use RemoteBackend construct #644 & #669
• UX: Explain how to specify a stack in the error message #689
• Terraform Cloud: Output uses attribute name instead of id #717
• Terraform Cloud: Stream resource updates #712
• Add JSDoc links to Terraform Registry docs when generating providers #576

Fixed Bugs

• Return non-zero exit code on unknown command and allow terraform-like command names #680
• Add cdktf.log to .gitignore of built-in templates #662
• Fix elasticsearch index resource #681
• Fix gitignore after init #691
• Deploy changes on TF output changes #687
• Fix: Unable to use resources containing an argument named 'stack' #716
• OCI Synth issues: "module has already exported a member" #713
• Adapt to changed output format in Terraform 0.15.4 #736

[github-actions]

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