fix conformance bugs

This is the first official release which passes the conformance tests maintained by the dist-spec community.
https://oci.bloodorange.io/results/report-zot.html

Note that this is a incompatible release from zot client pov hence bumping up the major release version.

some bug fixes

Merge pull request #59 from rchincha/ldap

authN: first try local htpasswd then LDAP

fix JSON marshaling bug

Merge pull request #57 from rchincha/500-status

go.mod: update json-iterator

some bug fixes

v0.3.8

Merge pull request #55 from rchincha/500-status

improve logging

Merge pull request #37 from rchincha/log

log: improve logging

some bug fixes

Merge pull request #38 from rchincha/reorder

reorder header and data writes

some bug fixes

Merge pull request #36 from rchincha/ldap

ldap: improve recovery when connection failures

LDAP bug fixes

Merge pull request #35 from rchincha/ldap

ldap: setup a new ldap conn on bind failure

some security and bug fixes

Merge pull request #34 from rchincha/logs

logs: strip properly

some security and bug fixes

NOTE: this is a pre-release, please don't use