Auto merge of #249 - JohnTitor:deps-bump, r=JohnTitor

Upgrade dependencies

log:
```
    Updating crates.io index
    Updating ansi_term v0.11.0 -> v0.12.1
    Updating cc v1.0.71 -> v1.0.72
    Updating clap v2.33.3 -> v2.34.0
    Updating crc32fast v1.2.1 -> v1.3.0
    Updating git2 v0.13.23 -> v0.13.25
    Updating itertools v0.10.1 -> v0.10.3
    Updating libc v0.2.107 -> v0.2.111
    Updating libgit2-sys v0.12.24+1.3.0 -> v0.12.26+1.3.0
    Updating openssl-sys v0.9.70 -> v0.9.72
    Updating pkg-config v0.3.22 -> v0.3.24
    Updating ryu v1.0.5 -> v1.0.9
    Updating syn v1.0.81 -> v1.0.82
    Updating tinyvec v1.5.0 -> v1.5.1
```

Author: bors