* erasure-coding: do not panic on 1 validator * tabify fuzz tests * remove num_validators length check * remove unused import * move erasure_coding_fuzzer to fuzzer * change the authors to admit (at) parity.io * Apply suggestions from code review Co-authored-by: Sergei Shulepov <sergei@parity.io> Co-authored-by: Sergei Shulepov <sergei@parity.io>