text: Title: Append=False not working for AllStrategy
  Body: **Which version are you running? The lastest version is on Github. Pip is for major releases.**
  ```python
  import pandas_ta as ta
  print(ta.version)
  ```
  version == 0.3.14b0
  
  **Upgrade.**
  ```sh
  $ pip install -U git+https://github.com/twopirllc/pandas-ta
  ```
  
  **Describe the bug**
  A clear and concise description of what the bug is.
  when trying to calculate values for all indicators using below code, the data by default gets appended to the dataframe and there is no option to override it. Using "append=False" does not work. This makes it difficult to use this on streaming data.
  
  **To Reproduce**
  Provide sample code.
  df.ta.strategy('All', append=False, verbose=True, timed=True)
  
  **Expected behavior**
  A clear and concise description of what you expected to happen.
  "append=False" should ensure that output of AllStrategy is not added to source dataframe. 
  
  **Screenshots**
  If applicable, add screenshots to help explain your problem.
  
  **Additional context**
  Add any other context about the problem here.
  
  Thanks for using Pandas TA!
  