Use python3.7 in appveyor

Committed via https://github.com/asottile/all-repos

Don't test python3.5 now that we test python3.7

Added Python 3.7 support

Added --assume-in-merge option for check-merge-conflict

Fixes #300

Fix resource warnings

Fix invalid escape sequences

Allow multiple branches to be protected

Original patch by @moas

Improve vcs regex (don't match whitespace)

E309 is no longer rewritten by autopep8

Committed via https://github.com/asottile/all-repos

Suggest https:// git urls

Committed via https://github.com/asottile/all-repos

Remove (unused) Makefile

Committed via https://github.com/asottile/all-repos

Detect putty & sshcom private keys

Explicitly check for `ast.Name`

debug-statements: detect python3.7+ breakpoint()

Replace legacy wheel metadata

Committed via https://github.com/asottile/all-repos

Remove write_file (now unnecessary)