Thanks for this!  I've never heard of tagbar so I may start using it.  One thing you might find useful is you can add this to your .vimrc:
set updatetime=125
This will update gitgutter almost instantly when you make changes to git files.

@Brandon: Hey, I hope you are doing well! Thanks for the tip.

Thank you!
To make your instruction work please note that curl and exuberant ctags need to be installed.
Regards and Kudos for your work!

Hey Miguel,
Thanks for sharing your development stuff! I really like the part that automatically installs vim plug.
Kudos to you!

Hello Miquel,
Thanks for all your work. This is not related to this video but I was wondering if you can help with the Microflack app on this URL https://github.com/miguelgrinberg/microflack_admin. The users' pod keeps crashing and kubectl logs give the following errors. I know its 3 years and many things have changed. Please see if you can help to fix the issues. Thanks
kubectl get logs
users-5d658dff8b-8ch7s                                            0/1     CrashLoopBackOff   8          17m
kubectl logs users-5d658dff8b-8ch7s 
Traceback (most recent call last):
  File "migrations/env.py", line 87, in <module>
    run_migrations_online()
  File "migrations/env.py", line 72, in run_migrations_online
    connection = engine.connect()
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 2082, in connect
    return self._connection_cls(self, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 90, in __init__
    if connection is not None else engine.raw_connection()
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 2168, in raw_connection
    self.pool.unique_connection, _connection)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 2138, in _wrap_pool_connect
    return fn()
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/pool.py", line 328, in unique_connection
    return _ConnectionFairy._checkout(self)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/pool.py", line 766, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/pool.py", line 516, in checkout
    rec = pool._do_get()
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/pool.py", line 1229, in _do_get
    return self._create_connection()
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/pool.py", line 333, in _create_connection
    return _ConnectionRecord(self)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/pool.py", line 461, in __init__
    self.__connect(first_connect_check=True)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/pool.py", line 651, in __connect
    connection = pool._invoke_creator(self)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 105, in connect
    return dialect.connect(*cargs, **cparams)
  File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 393, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/usr/local/lib/python3.6/site-packages/pymysql/__init__.py", line 90, in Connect
    return Connection(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pymysql/connections.py", line 706, in __init__
    self.connect()
  File "/usr/local/lib/python3.6/site-packages/pymysql/connections.py", line 931, in connect
    self._get_server_information()
  File "/usr/local/lib/python3.6/site-packages/pymysql/connections.py", line 1269, in _get_server_information
    self.server_charset = charset_by_id(lang).name
  File "/usr/local/lib/python3.6/site-packages/pymysql/charset.py", line 38, in by_id
    return self._by_id[id]
KeyError: 255

@Damian: it's an issue with the pymsql package and MySQL 8. Use a newer version of pymysql.

To get this to work on windows, I installed vim-plug manually and removed the lines relating to vim-plug detection and initial plugin installation. (The need_to_install_plugin blocks)
I tried to see if I could figure out how to modify it so that part would work but couldn't figure out how to do it. I think it's related to how the home directory is specified in windows. But the manual vim-plug installation steps above do work.
Also, @Miguel -- I don't seem to get notified about comments here when my post goes up or a response is posted.

Also these guys need to be commented out otherwise weird characters will invade everywhere.
let &t_SI .= "\<Esc>[?2004h"
let &t_EI .= "\<Esc>[?2004l"

@Scott: This may not be what you want, but I have used vim under the WSL and Cygwin using the same configuration w/o any issues.