rest: add derivative status and set collateral endpoints

bfxapi/examples/rest/get_authenticated_data.py

@@ -12,8 +12,7 @@ API_SECRET=os.getenv("BFX_SECRET")
 bfx = Client(
   API_KEY=API_KEY,
   API_SECRET=API_SECRET,
-  logLevel='DEBUG',
-  rest_host='https://test.bitfinex.com/v2'
+  logLevel='DEBUG'
 )
 
 now = int(round(time.time() * 1000))

bfxapi/examples/rest/get_public_data.py

@@ -38,12 +38,18 @@ async def log_mul_tickers():
   print ("Tickers:")
   print (tickers)
 
+async def log_derivative_status():
+  status = await bfx.rest.get_derivative_status('tBTCF0:USTF0')
+  print ("Deriv status:")
+  print (status)
+
 async def run():
   await log_historical_candles()
   await log_historical_trades()
   await log_books()
   await log_ticker()
   await log_mul_tickers()
+  await log_derivative_status()
   
 t = asyncio.ensure_future(run())
 asyncio.get_event_loop().run_until_complete(t)