argument parser acting strange (not trimming spaces?)
not-working script:

```bash
#!/usr/bin/env bash

# usage:
#   ./compress.sh    # build + minify
#   ./compress.sh 1  # build only

MINIFY="--minify"
if [[ -n "$1" ]]; then
  echo "skipping minification..."
  MINIFY=""
fi

/w/shrinko8/shrinko8.py game.p8 tower.p8.png --lint --count "$MINIFY" --script compress_combine.py
```

when I `./compress.sh`, shrinko8 runs normally. when I `./compress.sh 1`, it shows the usage string and says `shrinko8.py: error: unrecognized arguments:`, which is unexpected (I expect it to run normally) 

I assume the problem is because the command ends up having two spaces in it, which confuses the argument parser, but I haven't looked into it.

My shrinko8 commit hash is 8a4f6e0

----

workaround:
```bash
#!/usr/bin/env bash

# usage:
#   ./compress.sh    # build + minify
#   ./compress.sh 1  # build only

MINIFY="--minify"
if [[ -n "$1" ]]; then
  echo "skipping minification..."
  MINIFY="--count" # hacky
fi

/w/shrinko8/shrinko8.py game.p8 tower.p8.png --lint --count "$MINIFY" --script compress_combine.py
```