Update PoS parameter values

[brentstone]

During the August retreat in Italy, we decided upon some parameter values for the PoS system. These are:

• pipeline_offset = 2
• unbonding_offset = 21
• slash rate = 0.001 / namnam (fundamental token unit)
• votes per token = 1 / namnam (fundamental token unit)
• max active validators = 100
• block proposer reward = 1% minimum
• PoS inflation = 10% maximum

Furthermore, subsequent conversations established:

• unit denomination = 10^6 (fundamental tokens per whole NAM)

[brentstone]

@cwgoes @adrianbrink @tzemanovic - do we want the same slash rate for duplicate vote attacks and light client attacks?

[cwgoes]

@cwgoes @adrianbrink @tzemanovic - do we want the same slash rate for duplicate vote attacks and light client attacks?

Yes - both varying from 0 to 1 (100%) according to the cubic slashing function.