Bubble [main]

Added a private thanks mechanism

Mon May 29 15:09:50 2023 +0300

 50_bubble.py | 12 +++++++++++-
 feeds.py     | 15 ++++++++++-----
 model.py     | 23 ++++++++++++++++++++++-
 user.py      | 16 ++++++++++++++++
 4 files changed, 59 insertions(+), 7 deletions(-)