common/defs: add Elements regtest support (#213)

common/defs/bitcoin/elements.json

@@ -0,0 +1,39 @@
+{
+  "coin_name": "Elements",
+  "coin_shortcut": "ELEMENTS",
+  "coin_label": "Elements",
+  "website": "https://elementsproject.org",
+  "github": "https://github.com/ElementsProject/elements",
+  "maintainer": "Roman Zeyde <mail@romanzey.de>",
+  "curve_name": "secp256k1",
+  "address_type": 235,
+  "address_type_p2sh": 75,
+  "maxfee_kb": 10000000,
+  "minfee_kb": 1000,
+  "signed_message_header": "Bitcoin Signed Message:\n",
+  "hash_genesis_block": "209577bda6bf4b5804bd46f8621580dd6d4e8bfa2d190e1c50e932492baca07d",
+  "xprv_magic": 70615956,
+  "xpub_magic": 70617039,
+  "xpub_magic_segwit_p2sh": 71979618,
+  "xpub_magic_segwit_native": 73342198,
+  "bech32_prefix": "ert",
+  "cashaddr_prefix": null,
+  "slip44": 1,
+  "segwit": true,
+  "decred": false,
+  "fork_id": null,
+  "force_bip143": false,
+  "bip115": false,
+  "default_fee_b": {
+    "Normal": 10
+  },
+  "dust_limit": 546,
+  "blocktime_seconds": 600,
+  "uri_prefix": "elements",
+  "min_address_length": 27,
+  "max_address_length": 34,
+  "bitcore": [],
+  "blockbook": [],
+  "cooldown": 100,
+  "consensus_branch_id": null
+}