CI check features (#1708)

To resolve issue #1136.

This is a cross verification against zepter.

- [cargo-featalign](https://github.com/hack-ink/cargo-featalign):
Verifies the proper propagation of all features.
- [zepter](https://github.com/ggwpez/zepter): Checks for accidentally
enabled features.

cc @ggwpez

 

---
Switch to a new branch. Original PR #1537.

---------

Signed-off-by: Xavier Lau <xavier@inv.cafe>
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Chevdor <chevdor@users.noreply.github.com>