0.1.0

First release.

lapt installs Debian/Ubuntu packages under $HOME/.local, no sudo, each
package in its own private opt/<pkg> tree — a thin wrapper around
apt-get download + dpkg -x.

Commands: install, remove, list, vendor, fix, prune, expose.

No shared /usr, so removing one package can't break another. Already
system-satisfied dependencies are reused.