Remove fees from circulation
Add POS_v3_DIFFICULTY_HEIGHT const
Add nFees as argument of GetNextTargetRequired
New GetNextTargetRequiredV3
Improve nFees calculation
Add declarations
Changing to new GetNextWork
Merge pull request #2 from MaxAntonenko/master

Update from main rep
Fix bug when 1block dust tx could mitigate difficulty
Defence over double spend attack
Fix logic error
Change v3-height to 100k
Merge pull request #3 from MaxAntonenko/bottleneck-solver

PoS 3.0 branch creating