Merge Tenacity's dynamic compressor

[generic-pers0n]

More related to the Tenacity merges.

I've merge Tenacity's dynamic compressor to provide another compressor in Saucedacity. This was surprisingly easier than I expected, but everything seems to work so far.

• [x] I made sure the code compiles on my machine
• [x] I made sure there are no unnecessary changes in the code
• [x] I made sure the title of the PR reflects the core meaning of the issue you are solving
• [x] I made sure the commit message(s) contain a description and answer the question "Why do those changes fix that particular issue?" or "Why are those changes really necessary as improvements?"