My new vim config (adapted by Fisa-vim-config)

.vimrc

" cjadeveloper-vim-config
" Modified by <cjadeveloper>
" Copyright (C) 2020 - Cristian Javier Azulay (cjadeveloper@gmail.com)
" version: 1.6.0 - 22/03/2020
" 
" cjadeveloper-vim-config is based on:  
"   - Fisa-vim-config, a config for both Vim and NeoVim
"     http://vim.fisadev.com
"     version: 12.0.0

" To use fancy symbols wherever possible, change this setting from 0 to 1
" and use a font from https://github.com/ryanoasis/nerd-fonts in your terminal 
" (if you aren't using one of those fonts, you will see funny characters here. 
" Turst me, they look nice when using one of those fonts).
let fancy_symbols_enabled = 1

set encoding=utf-8
let using_neovim = has('nvim')
let using_vim = !using_neovim

" ============================================================================
" Vim-plug initialization
" Avoid modifying this section, unless you are very sure of what you are doing

let vim_plug_just_installed = 0
if using_neovim
    let vim_plug_path = expand('~/.config/nvim/autoload/plug.vim')
else
    let vim_plug_path = expand('~/.vim/autoload/plug.vim')
endif
if !filereadable(vim_plug_path)
    echo "Installing Vim-plug..."
    echo ""
    if using_neovim
        silent !mkdir -p ~/.config/nvim/autoload
        silent !curl -fLo ~/.config/nvim/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
    else
        silent !mkdir -p ~/.vim/autoload
        silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
    endif
    let vim_plug_just_installed = 1
endif

" manually load vim-plug the first time
if vim_plug_just_installed
    :execute 'source '.fnameescape(vim_plug_path)
endif

" Obscure hacks done, you can now modify the rest of the config down below 
" as you wish :)
" IMPORTANT: some things in the config are vim or neovim specific. It's easy 
" to spot, they are inside `if using_vim` or `if using_neovim` blocks.

" ============================================================================
" Active plugins
" You can disable or add new ones here:

" this needs to be here, so vim-plug knows we are declaring the plugins we
" want to use
if using_neovim
    call plug#begin("~/.config/nvim/plugged")
else
    call plug#begin("~/.vim/plugged")
endif

" Now the actual plugins:

" Override configs by directory
Plug 'arielrossanigo/dir-configs-override.vim'
" Code commenter
Plug 'preservim/nerdcommenter'
" Better file browser
Plug 'scrooloose/nerdtree'
" Class/module browser
Plug 'majutsushi/tagbar'
" Search results counter
Plug 'vim-scripts/IndexedSearch'
" A nice colorscheme
Plug 'dracula/vim', {'as':'dracula'}
" Airline
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
" Code and files fuzzy finder
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
" Pending tasks list
Plug 'fisadev/FixedTaskList.vim'
" Async autocompletion
if using_neovim && vim_plug_just_installed
    Plug 'Shougo/deoplete.nvim', {'do': ':autocmd VimEnter * UpdateRemotePlugins'}
else
    Plug 'Shougo/deoplete.nvim'
endif
Plug 'roxma/nvim-yarp'
Plug 'roxma/vim-hug-neovim-rpc'
" Python autocompletion
Plug 'deoplete-plugins/deoplete-jedi'
" Completion from other opened files
Plug 'Shougo/context_filetype.vim'
" Just to add the python go-to-definition and similar features, autocompletion
" from this plugin is disabled
Plug 'davidhalter/jedi-vim'
" Automatically close parenthesis, etc
Plug 'Townk/vim-autoclose'
" Surround
Plug 'tpope/vim-surround'
" Indent text object
Plug 'michaeljsmith/vim-indent-object'
" Indentation based movements
Plug 'jeetsukumaran/vim-indentwise'
" Better language packs
Plug 'sheerun/vim-polyglot'
" Ack code search (requires ack installed in the system)
Plug 'mileszs/ack.vim'
" Paint css colors with the real color
Plug 'lilydjwg/colorizer'
" Window chooser
Plug 't9md/vim-choosewin'
" Automatically sort python imports
Plug 'fisadev/vim-isort'
" Highlight matching html tags
Plug 'valloric/MatchTagAlways'
" Generate html in a simple way
Plug 'mattn/emmet-vim'
" Git integration
Plug 'tpope/vim-fugitive'
" Git/mercurial/others diff icons on the side of the file lines
Plug 'mhinz/vim-signify'
" Yank history navigation
Plug 'vim-scripts/YankRing.vim'
" Linters
Plug 'neomake/neomake'
" Relative numbering of lines (0 is the current line)
" (disabled by default because is very intrusive and can't be easily toggled
" on/off. When the plugin is present, will always activate the relative
" numbering every time you go to normal mode. Author refuses to add a setting
" to avoid that)
Plug 'myusuf3/numbers.vim'
" Nice icons in the file explorer and file type status line.
Plug 'ryanoasis/vim-devicons'

if using_vim
    " Consoles as buffers (neovim has its own consoles as buffers)
    Plug 'rosenfeld/conque-term'
    " XML/HTML tags navigation (neovim has its own)
    Plug 'vim-scripts/matchit.zip'
endif

" Code searcher. If you enable it, you should also configure g:hound_base_url 
" and g:hound_port, pointing to your hound instance
" Plug 'mattn/webapi-vim'
" Plug 'jfo/hound.vim'

" Tell vim-plug we finished declaring plugins, so it can load them
call plug#end()

" ============================================================================
" Install plugins the first time vim runs

if vim_plug_just_installed
    echo "Installing Bundles, please ignore key map error messages"
    :PlugInstall
endif

" ============================================================================
" Vim settings and mappings
" You can edit them as you wish
 
if using_vim
    " A bunch of things that are set by default in neovim, but not in vim

    " no vi-compatible
    set nocompatible

    " allow plugins by file type (required for plugins!)
    filetype plugin on
    filetype indent on

    " always show status bar
    set ls=2

    " incremental search
    set incsearch
    " highlighted search results
    set hlsearch

    " syntax highlight on
    syntax on

    " better backup, swap and undos storage for vim (nvim has nice ones by
    " default)
    set directory=~/.vim/dirs/tmp     " directory to place swap files in
    set backup                        " make backup files
    set backupdir=~/.vim/dirs/backups " where to put backup files
    set undofile                      " persistent undos - undo after you re-open the file
    set undodir=~/.vim/dirs/undos
    set viminfo+=n~/.vim/dirs/viminfo
    " create needed directories if they don't exist
    if !isdirectory(&backupdir)
        call mkdir(&backupdir, "p")
    endif
    if !isdirectory(&directory)
        call mkdir(&directory, "p")
    endif
    if !isdirectory(&undodir)
        call mkdir(&undodir, "p")
    endif
end

" tabs and spaces handling
set expandtab
set tabstop=4
set softtabstop=4
set shiftwidth=4

set splitbelow
set splitright

" show line numbers
set nu

" use 256 colors when possible
if has('gui_running') || using_neovim || (&term =~? 'mlterm\|xterm\|xterm-256\|screen-256')
    if !has('gui_running')
        let &t_Co = 256
    endif
    "colorscheme vim-monokai-tasty
    colorscheme dracula
else
    "colorscheme delek
    colorscheme dracula
endif

" needed so deoplete can auto select the first suggestion
set completeopt+=noinsert
" comment this line to enable autocompletion preview window
" (displays documentation related to the selected completion option)
" disabled by default because preview makes the window flicker
set completeopt-=preview

" autocompletion of files and commands behaves like shell
" (complete only the common part, list the options that match)
set wildmode=list:longest

" save as sudo
ca w!! w !sudo tee "%"

" tab navigation mappings
map tt :tabnew 
map <M-Right> :tabn<CR>
imap <M-Right> <ESC>:tabn<CR>
map <M-Left> :tabp<CR>
imap <M-Left> <ESC>:tabp<CR>

" when scrolling, keep cursor 3 lines away from screen border
set scrolloff=3

" clear search results
nnoremap <silent> // :noh<CR>

" clear empty spaces at the end of lines on save of python files
autocmd BufWritePre *.py :%s/\s\+$//e

" fix problems with uncommon shells (fish, xonsh) and plugins running commands
" (neomake, ...)
set shell=/bin/bash 

" Ability to add python breakpoints
" (I use ipdb, but you can change it to whatever tool you use for debugging)
au FileType python map <silent> <leader>b Oimport ipdb; ipdb.set_trace()<esc>
" ============================================================================
" Plugins settings and mappings
" Edit them as you wish.

" Tagbar -----------------------------
" toggle tagbar display
map <F4> :TagbarToggle<CR>
" autofocus on tagbar open
let g:tagbar_autofocus = 1

" NERDTree -----------------------------
" toggle nerdtree display
map <F3> :NERDTreeToggle<CR>
" open nerdtree with the current file selected
nmap ,t :NERDTreeFind<CR>
" don;t show these file types
let NERDTreeIgnore = ['\.pyc$', '\.pyo$']

" Enable folder icons
let g:WebDevIconsUnicodeDecorateFolderNodes = 1
let g:DevIconsEnableFoldersOpenClose = 1

" Display hidden files by default.
let NERDTreeShowHidden=1

" Fix directory colors
highlight! link NERDTreeFlags NERDTreeDir

" Remove expandable arrow
let g:WebDevIconsNerdTreeBeforeGlyphPadding = ""
let g:WebDevIconsUnicodeDecorateFolderNodes = v:true
let NERDTreeDirArrowExpandable = "\u00a0"
let NERDTreeDirArrowCollapsible = "\u00a0"
let NERDTreeNodeDelimiter = "\x07"

" Autorefresh on tree focus
function! NERDTreeRefresh()
    if &filetype == "nerdtree"
        silent exe substitute(mapcheck("R"), "<CR>", "", "")
    endif
endfunction

autocmd BufEnter * call NERDTreeRefresh()

" Tasklist ------------------------------

" show pending tasks list
map <F2> :TaskList<CR>

" Neomake ------------------------------

" Run linter on write
autocmd! BufWritePost * Neomake

" Check code as python3 by default
let g:neomake_python_python_maker = neomake#makers#ft#python#python()
let g:neomake_python_flake8_maker = neomake#makers#ft#python#flake8()
let g:neomake_python_python_maker.exe = 'python3 -m py_compile'
let g:neomake_python_flake8_maker.exe = 'python3 -m flake8'

" Disable error messages inside the buffer, next to the problematic line
let g:neomake_virtualtext_current_error = 0

" Fzf ------------------------------
" file finder mapping
nmap ,e :Files<CR>
" tags (symbols) in current file finder mapping
nmap ,g :BTag<CR>
" the same, but with the word under the cursor pre filled
nmap ,wg :execute ":BTag " . expand('<cword>')<CR>
" tags (symbols) in all files finder mapping
nmap ,G :Tags<CR>
" the same, but with the word under the cursor pre filled
nmap ,wG :execute ":Tags " . expand('<cword>')<CR>
" general code finder in current file mapping
nmap ,f :BLines<CR>
" the same, but with the word under the cursor pre filled
nmap ,wf :execute ":BLines " . expand('<cword>')<CR>
" general code finder in all files mapping
nmap ,F :Lines<CR>
" the same, but with the word under the cursor pre filled
nmap ,wF :execute ":Lines " . expand('<cword>')<CR>
" commands finder mapping
nmap ,c :Commands<CR>

" Deoplete -----------------------------
" Use deoplete.
let g:deoplete#enable_at_startup = 1
call deoplete#custom#option({
\   'ignore_case': v:true,
\   'smart_case': v:true,
\})

" complete with words from any opened file
let g:context_filetype#same_filetypes = {}
let g:context_filetype#same_filetypes._ = '_'

" Jedi-vim ------------------------------
" Disable autocompletion (using deoplete instead)
let g:jedi#completions_enabled = 0

" All these mappings work only for python code:
" Go to definition
let g:jedi#goto_command = ',d'
" Find ocurrences
let g:jedi#usages_command = ',o'
" Find assignments
let g:jedi#goto_assignments_command = ',a'
" Go to definition in new tab
nmap ,D :tab split<CR>:call jedi#goto()<CR>

" Ack.vim ------------------------------
" mappings
nmap ,r :Ack 
nmap ,wr :execute ":Ack " . expand('<cword>')<CR>

" Window Chooser ------------------------------
" mapping
nmap  -  <Plug>(choosewin)
" show big letters
let g:choosewin_overlay_enable = 1

" Signify ------------------------------
" this first setting decides in which order try to guess your current vcs
" UPDATE it to reflect your preferences, it will speed up opening files
let g:signify_vcs_list = ['git', 'hg']

" mappings to jump to changed blocks
nmap <leader>sn <plug>(signify-next-hunk)
nmap <leader>sp <plug>(signify-prev-hunk)
" nicer colors
highlight DiffAdd           cterm=bold ctermbg=none ctermfg=119
highlight DiffDelete        cterm=bold ctermbg=none ctermfg=167
highlight DiffChange        cterm=bold ctermbg=none ctermfg=227
highlight SignifySignAdd    cterm=bold ctermbg=237  ctermfg=119
highlight SignifySignDelete cterm=bold ctermbg=237  ctermfg=167
highlight SignifySignChange cterm=bold ctermbg=237  ctermfg=227

" Autoclose --------------------------------------------
" Fix to let ESC work as espected with Autoclose plugin
" (without this, when showing an autocompletion window, ESC won't leave insert
"  mode)
let g:AutoClosePumvisible = {"ENTER": "\<C-Y>", "ESC": "\<ESC>"}

" Yankring --------------------------------------------
if using_neovim
    let g:yankring_history_dir = '~/.config/nvim/'
    " Fix for yankring and neovim problem when system has non-text things
    " copied in clipboard
    let g:yankring_clipboard_monitor = 0
else
    let g:yankring_history_dir = '~/.vim/dirs/'
endif

" Airline ---------------------------------------------

let g:airline_powerline_fonts = 1
"let g:airline_theme = 'bubblegum'
let g:airline_theme = 'deus'
let g:airline#extensions#whitespace#enabled = 0

" Fancy Symbols!! -------------------------------------

if fancy_symbols_enabled
    let g:webdevicons_enable = 1

    " custom airline symbols
    if !exists('g:airline_symbols')
       let g:airline_symbols = {}
    endif
    "let g:airline_left_sep = ''
    "let g:airline_left_alt_sep = ''
    "let g:airline_right_sep = ''
    "let g:airline_right_alt_sep = ''
    "let g:airline_symbols.branch = '⭠'
    "let g:airline_symbols.readonly = '⭤'
    "let g:airline_symbols.linenr = '⭡'
else
    let g:webdevicons_enable = 0
endif


" MyCustom configs --------------------
" """" See `~/.config/nvim/custom.vim`
" End MyCuston configs ----------------

" Include user's custom nvim configurations
if using_neovim
    let custom_configs_path = "~/.config/nvim/custom.vim"
else
    let custom_configs_path = "~/.vim/custom.vim"
endif
if filereadable(expand(custom_configs_path))
  execute "source " . custom_configs_path
endif