Added wrappers as an access control mechanism.
wrappers: allowing silencing now implicitly allows unsilencing and vice-versa
Renamed `createrWrapper` method to `restrict`
Fixed `restrict` method not actually using the list of prohibited methods
Added and improved tests for `restrict` method
Added notes on restricting channels
Bump to v5.1.0
Merge branch 'multivents_wrappers'
Resolved merge conflict