* Derive Display for BlockError * Convert error_chain errors * Convert ethcore usages of errors * Fix remaining compile errors in ethcore * Fix other crates * Fix tests compilation * Implement error for Snapshot error * Remove redundant into
* Derive Display for BlockError * Convert error_chain errors * Convert ethcore usages of errors * Fix remaining compile errors in ethcore * Fix other crates * Fix tests compilation * Implement error for Snapshot error * Remove redundant into