Benedikt

Re-opening as a reminder to remove Python 2 code (such as all `six` usage).

This should certainly be merged with the updated version requirement in #70.

> hey @wisp3rwind I have addressed the comments you made. I see from #4488 and [the discourse discussion of a roadmap](https://discourse.beets.io/t/project-roadmap/1291/3?u=adrian) that there are lots of great but longer-term ideas...

> Right now beets writes the same file twice (tested on `.flac` but probably it's true for all format). The first time it had happened when files is moved into...

Hey, nice to see that you're picking up the work on `dbcore` again! I introduced the `NamedQuery` class at some point when adding typings to the module. Did you check...

> Is there a reason we're using `BLOB_TYPE = memoryview` instead of `bytes`? I tested querying using `bytes` and I see to get the expected results https://github.com/beetbox/beets/blob/92fb830559530a4913b6966059c053fdd1e46bcf/beets/library.py#L41-L44

> > > Is there a reason we're using `BLOB_TYPE = memoryview` instead of `bytes`? I tested querying using `bytes` and I see to get the expected results > >...

Looks like a simple bug in `librosa`, though: https://github.com/librosa/librosa/issues/1830 (i.e. `librosa` uses `scipy < 1.0.0`API).

Hmm, one of the commits that popped up in the `git blame` of the `move` function is this: ``` commit b04096de25fe9549f8f96e9a610a4936aa6b4a92 Author: Adrian Sampson Date: Sat May 19 11:52:53 2012...

In any case, `wav` was in the list of lossless formats already, but that was apparently the incorrect key. If I'm reading the code correctly at a glance, the `Item.format`...