django-compressor caches SASS compiled files and doesn't update them after changes
<p>My django-compressor properly compiles SASS files containing <code>@import</code>, but then caches them and doesn't update when imported files have been changed. I don't get it, I thought that if SASS compiler isn't added to COMPRESS_CACHEABLE_PRECOMPILERS, they shouldn't be cached at all.</p>

<p>My setup:</p>

<pre><code>COMPRESS_PRECOMPILERS = (
    ('text/coffeescript', 'coffee --compile --stdio'),
    ('text/sass', 'django_libsass.SassCompiler'),
)
COMPRESS_CACHE_BACKEND = 'compressor'
COMPRESS_CACHEABLE_PRECOMPILERS = (
    'text/coffeescript',
)
COMPRESS_ENABLED = True
</code></pre>

<p>It worked fine previously with <code>COMPRESS_ENABLED</code> not set to <code>True</code> (as in, files were compiled but not compressed and cached).</p>