Aws-cidr-finder

Changed

* Refactored the code to reduce code duplication between the IPv4 and IPv6 functionalities (by [cooperwalbrun](https://github.com/cooperwalbrun))

Added

* Implemented support for IPv6 VPCs via the `--ipv6` CLI flag (by [cooperwalbrun](https://github.com/cooperwalbrun))

Changed

* The structure of the JSON output when specifying the `--json` CLI flag now includes VPC names, VPC CIDRs, and informational messages (by [cooperwalbrun](https://github.com/cooperwalbrun))

Fixed

* Gracefully handle situations where the requested `--prefix` causes a huge number of CIDRs to be returned (by [cooperwalbrun](https://github.com/cooperwalbrun))

Changed

* Enabled querying by a prefix which is lower than at least one prefix in the returned CIDR list (by [cooperwalbrun](https://github.com/cooperwalbrun))

Fixed

* Fixed `find_subnet_holes` slowness and incorrectness issues (by [cooperwalbrun](https://github.com/cooperwalbrun))

Added

* Created the project (by [cooperwalbrun](https://github.com/cooperwalbrun))
* Implemented the initial functionality of finding subnet "holes" in IPv4 VPCs (by [cooperwalbrun](https://github.com/cooperwalbrun))