Valeriy Savchenko

Hey there folks, I'm working on [FURB113](https://github.com/dosisod/refurb/blob/master/refurb/checks/builtin/list_extend.py).

Also implemented [FURB131](https://github.com/dosisod/refurb/blob/master/refurb/checks/builtin/no_del.py) and [FURB132](https://github.com/dosisod/refurb/blob/master/refurb/checks/builtin/set_discard.py). @charliermarsh WDYT? Do you think it's worth it? Thanks!

Working on [FURB140](https://github.com/dosisod/refurb/blob/master/refurb/checks/itertools/use_starmap.py).

Working on [FURB101](https://github.com/dosisod/refurb/blob/master/refurb/checks/pathlib/read_text.py)

OK, I'll try to figure it out. Still thanks for your fast reply!