update dependencies and deprecated functions

[al8n]

Hi, when I write my project depending on both flurry and crossbeam-epoch, I meet this error.

error[E0308]: mismatched types
   --> src/store/flurry_store.rs:348:26
    |
348 |         map.insert(1, 1, &g);
    |                          ^^ expected struct `flurry::epoch::Guard`, found struct `crossbeam_epoch::Guard`
    |
    = note: expected reference `&flurry::epoch::Guard`
               found reference `&crossbeam_epoch::Guard`
    = note: perhaps two different versions of crate `crossbeam_epoch` are being used?

I found some dependencies in this crate that are out-of-date, so I update the dependencies and deprecated functions.

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This change is 

[al8n]

Hi, @jonhoo. I have no idea why the tarpaulin test failed, could you give a review? Thanks!

[jonhoo]

Thanks! A couple of mostly smaller notes.

[al8n]

Hi, jonhoo. Thanks for your suggestions, all suggestions have been applied now.

[ibraheemdev]

Deps were updated in #105, and the deprecated functions were fixed as part of #102.