Merge pull request #149 from DanchuoZhong/refactor/seed-chainstate-checksum

Merge branch 'stacks-network:master' into refactor/seed-chainstate-checksum

fix: replace docker exec -it with -i in seed-chainstate.sh

bumping api to 8.15.1 since archives are published

refactor: move checksum download logic from download_file to verify_checksum

Merge pull request #148 from wileyj/chore/housekeeping

use zstd for archives - additional housekeeping tasks

Update sample.env

Merge pull request #147 from stacks-network/chore/update-epochs

chore: update/add testnet epoch heights

Merge pull request #146 from wileyj/chore/update_image_namespace

Update default docker namespace to blockstack/stacks-core

Merge pull request #145 from wileyj/chore/update_version

Updating to latest versions

Merge pull request #141 from wileyj/chore/storage_note