add sidechain calls

bump version and add lock file

remove custom structs from events to avoid api-client decoding error

bump version to 0.6.14

upgrade to substrate-2.0.0

upgrade to substrate 2.0.0-rc5

bump version

mitigate replay attack in unshield (#12)

* [mitigate_replay_attack]added map that stores all confirmed unshield calls. And only executes transfer once.

call_hash is now H256 instead of Vec<u8>

* fn unshield_funds: add info logs for confirmations

* bump version: 0.6.8-sub2.0.0-alpha.7

fix timestamp with substratee node (#11)

* ! fix: Timestamp in registry was handled as seconds, while with real substratee-node we have milliseconds. This led to Error::AttestationReportTooOld with the in the node.

* version bump: 0.6.7-sub2.0.0-alpha.7

* enable log in tests

bump version: 0.6.6-sub2.0.0-alpha.7

Merge remote-tracking branch 'origin/master'