Bump hal versions to 0.14

[robyoung]

⚠️ This does not currently work ⚠️ I'm leaving this open as somewhere to track progress.

• Bump nrf-hal to 0.14
• Loosen dependency requirements so that we don't pin to a specific patch version. Pinning that specifically means the user is more likely to end up with multiple versions of each crate.

[robyoung]

I am not seeing the flip-link errors from CI when I run this locally but I am seeing this from the ble example. I don't think we'll be able to upgrade the nrf-hals to0.14 just yet.

error[E0308]: mismatched types
  --> examples/ble-beacon/src/main.rs:29:39
   |
29 |         let mut radio = BleRadio::new(p.RADIO, &p.FICR, BLE_TX_BUF, BLE_RX_BUF);
   |                                       ^^^^^^^ expected struct `nrf51::RADIO`, found struct `microbit::nrf51_pac::RADIO`

error[E0308]: mismatched types
  --> examples/ble-beacon/src/main.rs:29:48
   |
29 |         let mut radio = BleRadio::new(p.RADIO, &p.FICR, BLE_TX_BUF, BLE_RX_BUF);
   |                                                ^^^^^^^ expected struct `nrf51::FICR`, found struct `FICR`
   |
   = note: expected reference `&nrf51::FICR`
              found reference `&FICR`

For more information about this error, try `rustc --explain E0308`.

[caemor]

The rubble/ble issue seems more complicated than just updating the nrf-hal (see the linked pr above)

A possible temporary fix for better usage of the discovery book would be to ignore the ble-example failure.

[caemor]

Rubble is updated but not yet released. We could possibly update the dev-dependency of rubble to the current git master which would fix everything else. The alternative is to wait for their next release.

[robyoung]

Oops, I completely forgot that this was what this PR was about and addressed this in #70 to unblock #69

@caemor I could have saved myself a lot of time if I'd looked here first because I basically exactly what you suggested 😫