🚀 New release: Ergo protocol reference client 6.0.0-RC2 (v6.0.0-RC2)

This 6.0 release candidate is suitable for public testnet 6.0 voting and activation, and contains some fixes:

Sigma:

* Coll.distinct removed https://github.com/ergoplatform/sigmastate-interpreter/pull/1052

* v6 version of Context.getVar removed https://github.com/ergoplatform/sigmastate-interpreter/pull/1050

* Global.powHit now returns UnsignedBigInt https://github.com/ergoplatform/sigmastate-interpreter/pull/1049

* v6 version of Box.getReg is using unique method id now https://github.com/ergoplatform/sigmastate-interpreter/pull/1048

* ErgoTree based versioning for new features https://github.com/ergoplatform/sigmastate-interpreter/pull/1043

* It is prohibited to use newly supported in serialization types in context extension and registers https://github.com/ergoplatform/sigmastate-interpreter/pull/1047

Ergo:

* rule 409 (parameters matching) replaced with new rule 419, which is identical except allowing for new (unknown) parameters to be written on the blockchain

* insertion of new voteable parameter , number of subblock per block, on v6 activation

to vote for a 6.0 soft-fork, put the following flag (120 = 1) into a config file:

```

ergo{

voting {

120 = 1

}

}

```

Check it out here: https://github.com/ergoplatform/ergo/releases/tag/v6.0.0-RC2