Prepare changelog for 1.7.4, add tests

Author: andrewthad

changelog.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to the [Haskell Package Versioning Policy](https://pvp.haskell.org/).
 
-## [1.7.4] - 2021-??-??
+## [1.7.4] - 2021-12-28
 
 - Add `decodeUtf8Bytes` to `Net.IP`.
 - Fix IPv4 octet overflow bug (#74)

test/Test.hs

@@ -140,6 +140,12 @@ tests = testGroup "tests"
  , PH.testCase "S" $ IPv4.reserved (IPv4.ipv4 192 88 99 0) @=? True
  , PH.testCase "T" $ IPv4.reserved (IPv4.ipv4 192 0 1 0) @=? False
  ]
+ , testGroup "private"
+ [ PH.testCase "A" $ IPv4.private (IPv4.ipv4 198 73 8 38) @=? False
+ , PH.testCase "B" $ IPv4.private (IPv4.ipv4 192 168 100 5) @=? True
+ , PH.testCase "C" $ IPv4.private (IPv4.ipv4 10 0 0 0) @=? True
+ , PH.testCase "D" $ IPv4.private (IPv4.ipv4 10 255 255 255) @=? True
+ ]
  ]
  , testGroup "IPv6 Range Operations"
  [ testProperty "Idempotence of normalizing IPv6 range"