git-subtree-dir: external/libevent
git-subtree-split: 5df3037d10556bfcb675bc73e516978b75fc7bc7

Allow only and skip flags to be used for dependencies.

Change log:
* export package lists
* fix comma delimited lists not working
* check if dependencies should build built
* update README
* update CI
* disable build dependencies CI

git-subtree-dir: external/node
git-subtree-split: 8658be998bcb8d50ee405a631ead46c09e6064de

Build python as a dependency of vim when the `--build-dependencies`
option is set.

Change log:
* replace skip-dependencies with build-dependencies (not set by default)
* script for building python (vim dependency)
* build python and use over system version for vim installation if  is set
* add CI job to build vim with built version of python

Implement the basic functionality of building and installing packages.

Change log:
* base script for controlling installations including the following options:
    - specificy packages to installations
    - choose to install dependencies
    - installation directories
* script for building zsh
* script for building ncurses (zsh dependency)
* script for building tmux
* script for building vim
* option to supply python3 configuration directory
* add instructions for building and installing to README.md
* add description of project to README.md

git-subtree-dir: external/vim
git-subtree-split: 008bff967f7fcaa6af066f71d65bfbba5ef5c7d3