* renamed nym-api config fields
* decouple rewarder startup from network monitor
* additional sections in nym-api config
* removed vesting queries in circulating supply calculator
* added memoized field for last submitted performance measurement
* wip: performance contract refresher
* cleaned up various contract caches
* modified cache refresher to allow passing update fn
* implement performance cache refreshing
* updated lefthook.yml to run cargo fmt
* impl NodePerformanceProvider trait
* dynamically using specific performance provider
* pre warm up performance contract cache and forbid the mode if its empty
* clippy
* introduce fallback setting for performance contract if value for given epoch is not available
* move some functions around
Jędrzej Stuczyński