Don't call it Pytest_Trio that just looks silly

docs/source/history.rst

@@ -5,7 +5,7 @@ Release history
 
 .. towncrier release notes start
 
-Pytest_Trio 0.4.2 (2018-06-29)
+pytest-trio 0.4.2 (2018-06-29)
 ------------------------------
 
 Features
@@ -16,20 +16,20 @@ Features
   using Trio. (`#42 <https://github.com/python-trio/pytest-trio/issues/42>`__)
 
 
-Pytest_Trio 0.4.1 (2018-04-14)
+pytest-trio 0.4.1 (2018-04-14)
 ------------------------------
 
 No significant changes.
 
 
-Pytest_Trio 0.4.0 (2018-04-14)
+pytest-trio 0.4.0 (2018-04-14)
 ------------------------------
 
 - Fix compatibility with trio 0.4.0 (`#25
   <https://github.com/python-trio/pytest-trio/pull/36>`__)
 
 
-Pytest_Trio 0.3.0 (2018-01-03)
+pytest-trio 0.3.0 (2018-01-03)
 ------------------------------
 
 Features
@@ -39,7 +39,7 @@ Features
   <https://github.com/python-trio/pytest-trio/issues/25>`__)
 
 
-Pytest_Trio 0.2.0 (2017-12-15)
+pytest-trio 0.2.0 (2017-12-15)
 ------------------------------
 
 - Heavy improvements, add async yield fixture, fix bugs, add tests etc. (`#17
@@ -53,14 +53,14 @@ Deprecations and Removals
   <https://github.com/python-trio/pytest-trio/issues/15>`__)
 
 
-Pytest_Trio 0.1.1 (2017-12-08)
+pytest-trio 0.1.1 (2017-12-08)
 ------------------------------
 
 Disable intersphinx for trio (cause crash in CI for the moment due to 404
 in readthedoc).
 
 
-Pytest_Trio 0.1.0 (2017-12-08)
+pytest-trio 0.1.0 (2017-12-08)
 ------------------------------
 
 Initial release.

pyproject.toml

@@ -2,5 +2,6 @@
 package = "pytest_trio"
 filename = "docs/source/history.rst"
 directory = "newsfragments"
+title_format = "pytest-trio {version} ({project_date})"
 underlines = ["-", "~", "^"]
 issue_format = "`#{issue} <https://github.com/python-trio/pytest-trio/issues/{issue}>`__"