Fix non-nova background color of ALE sign column (https://github.com/trevordmiller/nova-vim/pull/114)

Before:

After:

• Fix neovim floating window colors (https://github.com/trevordmiller/nova-vim/issues/111)
• Upgrade past security vulnerabilities in development dependencies used by contributors

Adds new feature of transparency variable option

Adds lightline support from @megalithic in https://github.com/trevordmiller/nova-vim/pull/105

Adds nova colors to the new :terminal in latest Vim.

Before

After

Adds more colors from vim-polyglot highlight groups for some languages:

• TypeScript
• Git
• Markdown
• JSON
• YAML
• Go
• Dockerfile
• Makefile

Add javascript flow support without extra config required

Fixes ColorColumn support when set (ie set colorcolumn=80)

• Add better FZF support
  • Adds fzf_colors variables from https://github.com/junegunn/fzf.vim#global-options
    • Doesn't include all colors (waiting on https://github.com/junegunn/fzf.vim/issues/581)
• Re-organize highlight rules into proper groups and move one-off variables to their own section

Let user decide on their fillchars between panes as this is not a concern of Nova