Poor man's volume profile

This is an attempt to get something more or less similar to the volume profile for free.

The code is generated using a template. To change the settings, you may need to regenerate the code. The code has a link to the repository with the template.

Versionshinweise:

• Decouple width of history and recent profiles
  
• Make profile value independent from profile height
  

Versionshinweise:

More precise profile value calculation

Versionshinweise:

Fix width with disabled history/last profiles

Versionshinweise:

• Fix width with disabled history/last profiles
  
• Do not clip recent profile
  

Versionshinweise:

• Fix server study error by adding max_bars_back.
  
• Rewrite code to make it simpler but slower.
  
• Add option to use custom ticker as volume source.
  

Versionshinweise:

Fix "screenshot"

Versionshinweise:

Replace green color by teal

Versionshinweise:

Add volume point of control (VPoC) as a line

Versionshinweise:

• Use nz() instead of own nan_to_float()
  
• Fix history block offset
  

Versionshinweise:

Volume clusters (those called historical blocks) have been moved to a separate study, see "Poor man's volume clusters".

Study has been significantly optimized. Now you can set the profile size up to 500 bars (limit can be lifted if you change max_bars_back in the source code).

Versionshinweise:

Correct way (I'm sure of it) to calculate row value. It could be wrong.

Versionshinweise:

Fix preview chart

Versionshinweise:

Fix the calculation of the first bar.

Versionshinweise:

Highlight peak volume in a profile

Versionshinweise:

Maybe fix for profile disappearing

Versionshinweise:

Draw a profile using labels

Versionshinweise:

* Fix "Invalid symbol" warning when the custom volume source is enabled.