Merge pull request #68 from serokell/zhenya/aws-sync

[OPS-984] Deployment: run `aws cp` before `aws sync` to replace existing files

Deployment: run `aws cp` before `aws sync` to replace existing files

`aws s3 sync` compares file size and timestamps to decide if a file in
the bucket needs to be replaced, but all files in nix store have
timestamp=1. So if a new file happens to have the same size as the old
one, `aws s3 sync` would decide that it does not need to be updated.
Run `aws cp` before `aws sync` to update existing files unconditionally

Merge pull request #64 from serokell/zhenya/ops934-deploy-to-aws

[OPS-934] Deploy website to AWS, add 404 page

[OPS-934] Add a primitive 404 page

CloudFront has a terrifying 404 page by default

[OPS-934] Deploy website to AWS

Merge pull request #67 from serokell/fix-builds

Fix builds

Clean up and fix build system

Remove x-revision

If I understand correctly, it has no place in source control and should
only be provided when updating the cabal file on Hackage.

Merge pull request #62 from andersk/version-bounds

Bump upper version bounds for Stackage lts-15.x

Bump upper version bounds for Stackage lts-15.x

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

Please Hackage by adding Paths_nixfmt to autogen-modules

Release 0.4.0

Merge pull request #55 from serokell/zhenya/pipeline

Store buildkite pipeline steps in the repository

Store buildkite pipeline steps in the repository

Version control is good. Steps copied verbatim from the buildkite
settings

Merge pull request #54 from serokell/fix-parens

Fix indentation of leading comments in parens

Fix indentation of leading comments in parens

Merge pull request #52 from rycee/include-version

Include version in `--version` output

Put summary and help in their proper places

Include version in `--version` output

Fixes #50

Merge pull request #51 from rycee/not-formatted-output

Print "not formatted" check result on one line