Log Message:
Add devel/go-gospel Version 0.0.20200416

Imported from wip.

Gospel ("GO SPEcial Library") is a Go library which includes the
following packages:
- gospel/parser: Read/access/write nested data structures
- gospel/network: Network-related functionality, services, packet
  handling, TOR, SOCKS5 connection handler, SMTP/POP3 mail handling
- gospel/bitcoin: Elliptic curve crypto (Secp256k1), Bitcoin
  addresses, key exchange, raw transactions, hash functions (Hash160,
  Hash256), base58 encoding
- gospel/bitcoin/wallet: HD key space, BIP39 seed words
- gospel/bitcoin/rpc: JSON-RPC to Bitcoin server
- gospel/bitcoin/script: Bitcoin script parser/interpreter
- gospel/math: Mathematical helpers, Fast Fourier Transformation,
  Arbitrary precision integers with chainable methods
- gospel/crypto: cryptographic helpers, secret sharing, prime fields,
  PRNG, Paillier crypto scheme, cryptographic counters
- gospel/logger: logging facilities
- gospel/data: useful data structures like stacks, vectors,
  Marshal/Unmarshal Golang objects, Bloom filter