chore: Release package sideway version 0.3.2

chore: Release package sideway version 0.3.1

chore: Release package sideway version 0.3.0

chore: Release package sideway version 0.2.1

chore: Release package sideway version 0.2.0

### Documentation

 - provide description and license for release
 - add FujiZ as one of the authors

### New Features

 - provide query_gid_table for convenient GID operations
   To keep compatibility, we would scan sysfs to get gid table when there
   is no ibv_query_gid_table symbol in libibverbs, just as what they do in
   the libibverbs original C implementation.
 - implement trait for CQ
   A trait called CompletionQueue is introduced to interact with other
   modules in this crate; The original wrapper struct for ibv_cq and
   ibv_cq_ex are renamed to BasicCompletionQueue and
   ExtendedCompletionQueue, respectively.
 - add setup method for each fields in grh
 - add more attr for INIT -> RTR transition
   Note that the example will fail with current setup.
 - implement modify on QueuePair
   Construct QueuePairAttribute using builder pattern and modify the QP
   through QueuePair::modify().
 - add support for qp and qp_ex
 - add create_comp_channel and create_cq_builder
 - add support for cq and comp_channel
   1. implement generic builder for both cq and cq_ex
   2. implement comp_channel and associate its lifetime with cq
 - an initial implementation of safe wrapper on rdmacm
 - an initial implementation of safe wrapper on ibverbs

### Bug Fixes

 - fix modifying QP to RTR and add modify to RTS

### Other

 - change rdma-mummy-sys to depend on release version
   Create a placeholder for changelog at the same time.

### Refactor

 - use enum Mtu instead of u32 as parameter
 - move comp_channel and cq to completion module

### Commit Statistics

 - 23 commits contributed to the release.
 - 16 commits were understood as [conventional](https://www.conventionalcommits.org).
 - 0 issues like '(#ID)' were seen in commit messages

### Commit Details

 * **Uncategorized**
    - Provide description and license for release (a807a1b)
    - Change rdma-mummy-sys to depend on release version (31ba5f5)
    - Merge pull request RDMA-Rust#19 from RDMA-Rust/fz/author (5cece9a)
    - Add FujiZ as one of the authors (48c20c6)
    - Merge pull request RDMA-Rust#16 from RDMA-Rust/dev/query_gid_table (75d76a1)
    - Fix modifying QP to RTR and add modify to RTS (5112dd1)
    - Provide query_gid_table for convenient GID operations (2b20ee9)
    - Merge pull request RDMA-Rust#15 from RDMA-Rust/dev/cq-trait (1dd6999)
    - Implement trait for CQ (cc4be2c)
    - Merge pull request RDMA-Rust#12 from RDMA-Rust/dev/modify-qp (e2fe5cd)
    - Add setup method for each fields in grh (70a9715)
    - Use enum Mtu instead of u32 as parameter (a0d51bb)
    - Add more attr for INIT -> RTR transition (b99cabe)
    - Implement modify on QueuePair (138dc15)
    - Merge pull request RDMA-Rust#11 from RDMA-Rust/dev/qp (ca4e2f3)
    - Add support for qp and qp_ex (8ac2f35)
    - Merge pull request RDMA-Rust#10 from RDMA-Rust/dev/comp (e3da584)
    - Add create_comp_channel and create_cq_builder (873dabd)
    - Move comp_channel and cq to completion module (19b3773)
    - Add support for cq and comp_channel (bbcd507)
    - An initial implementation of safe wrapper on rdmacm (d32bc83)
    - An initial implementation of safe wrapper on ibverbs (7091540)
    - Initial commit (d33fde1)