prompt: assume term width of 100 if not detectable
make pls more osx compatible
export LSCOLORS (bsd/osx)
Don't use pls on osx

osx python does not seem to automatically support ansi colors so they
are stripped.
Don't source ag completion on osx

It does not seem to work, not the end of the world.
ignore tput errors
revert osx friendly code

importing os.platform takes too long time
add .bin/packer* to gitignore