Add Feathercoin (#105)

defs/coins/feathercoin.json

@@ -0,0 +1,38 @@
+{
+  "coin_name": "Feathercoin",
+  "coin_shortcut": "FTC",
+  "coin_label": "Feathercoin",
+  "website": "https://feathercoin.com",
+  "github": "https://github.com/FeatherCoin/Feathercoin",
+  "maintainer": "Lucas Betschart <lucas@feathercoin.foundation>",
+  "curve_name": "secp256k1",
+  "address_type": 14,
+  "address_type_p2sh": 5,
+  "maxfee_kb": 40000000,
+  "minfee_kb": 1000,
+  "signed_message_header": "Feathercoin Signed Message:\n",
+  "hash_genesis_block": "12a765e31ffd4059bada1e25190f6e98c99d9714d334efa41a195a7e7e04bfe2",
+  "xprv_magic": 76077806,
+  "xpub_magic": 76069926,
+  "xpub_magic_segwit_p2sh": 77429938,
+  "xpub_magic_segwit_native": null,
+  "bech32_prefix": "fc",
+  "cashaddr_prefix": null,
+  "slip44": 8,
+  "segwit": true,
+  "decred": false,
+  "forkid": null,
+  "force_bip143": false,
+  "default_fee_b": {
+    "Normal": 1000
+  },
+  "dust_limit": 54600,
+  "blocktime_seconds": 60,
+  "address_prefix": "feathercoin:",
+  "min_address_length": 27,
+  "max_address_length": 34,
+  "bitcore": [
+    "https://bitcore.feathercoin.com"
+  ],
+  "blockbook": []
+}