update version to 0.8.3

Merge pull request #26 from delta-mpc/identity

Identity

Merge pull request #25 from delta-mpc/zk

bug fix: add verfier key json in built package

Merge pull request #25 from delta-mpc/zk

bug fix: add verfier key json in built package

Merge pull request #24 from delta-mpc/zk

bug fix: solve MetadataError in db init

bug fix: copy tsconfig-build.json in dockerfile

Merge pull request #22 from delta-mpc/0.3.5

add dst to subscribe stream for debug

Merge pull request #19 from mh739025250/main

change default chain provider

add dev tag to docker build dev

Merge pull request #17 from mh739025250/main

add gitref in docker-build-dev