implement withdraw circuit

fix test errors

update readme.md

delete unnecessary stuff

adjust workspace

delete webapp package

delete stacktrace file

wip: test case slash fails when receiver is zero

add more test cases for slashing (wip)

add test case slash succeeds

add test case release fails when freeze period

add test case release fails when no withdrawal

add test case for release succeeds

add test case for withdraw already underways

add test case withdraw fails when not registered

add test case withdraw succeeds

implement a dummy proof for test cases

delete unnecessary code

add test case for duplicate identityCommitments

add test case for lt deposit amount

add test case for set size check

adjust comments

complete register test

working nice register func

its alive

update dependencies

fix the division err

update err stacktrace

change log

error stuff