0.5

This pre-release fixes minor issues and clarifies some of cchost command line options.

Removed

• The new_user function in constitution scripts (e.g. gov.lua) should be deleted as it is now directly implemented inside CCF (#550).
• cmake -DTARGET=all replaced with cmake -DTARGET=sgx;virtual. See https://microsoft.github.io/CCF/quickstart/build.html#build-switches for new values (#513).

Improvements

• The members and users certificates can now be registered by the consortium using clients that are not the memberclient CLI (e.g. using the tests/infra/jsonrpc.py module) (#550).
• Fix for Raft consensus to truncate the ledger whenever a rollback occurs and use commit_idx instead of last_idx in many places because of signatures (#503).
• Join protocol over HTTP fix (#550).
• Clearer error messages for when untrusted users/members issue transactions to CCF (#530).
• devcontainer.json now points to right Dockerfile (#543).
• cchost --raft-election-timeout CLI option default now set to 5000 ms (#559).
• Better descriptions for cchost command line options (e.g. --raft-election-timeout) (#559).

The cchost, libluagenericenc.so, keygenerator and memberclient are also attached to this release to start a CCF network with lua application.
Note that libluagenericenc.so should be signed before being deployed by CCF (see https://microsoft.github.io/CCF/developers/build_app.html#standalone-signing).