update changelog for release 0.5.8
To generate the log, run `git log --pretty='* %h - %s (%an, %ad)' TAGNAME..HEAD .` replacing TAGNAME and HEAD as appropriate.
+# 0.5.8 - Upgrade reqwest to 0.10
+
+* 9dec41b - Upgrade reqwest to 0.10 (Audun Halland, Tue Dec 31 07:22:36 2019 +0100)
+* fda11e4 - Merge remote-tracking branch 'upstream/master' into async-await (Audun Halland, Tue Dec 17 02:13:58 2019 +0100)
+* d395d2d - pact_verifier: Upgrade reqwest to latest git alpha (Audun Halland, Tue Dec 17 00:57:16 2019 +0100)
+* 298f217 - pact_matching: Upgrade reqwest to current alpha (Audun Halland, Tue Dec 17 00:36:33 2019 +0100)
+* d28d97d - bump version to 0.5.8 (Ronald Holshausen, Sat Dec 14 16:57:02 2019 +1100)
+
# 0.5.7 - Bugfix Release
* a660b87 - fix: correct pact merging to remove duplicates #54 (Ronald Holshausen, Sat Dec 14 15:06:30 2019 +1100)
