Prep version 0.7.1 release (#463)

## Description

<!-- Provide a brief description of the PR's purpose here. -->

Preparation for release of v0.7.1.

## Status

- [x] I have read the guidelines in

[CONTRIBUTING.md](https://github.com/icaros-usc/pyribs/blob/master/CONTRIBUTING.md)
- [x] I have formatted my code using `yapf`
- [x] I have tested my code by running `pytest`
- [x] I have linted my code with `pylint`
- [x] I have added a one-line description of my change to the changelog
in
      `HISTORY.md`
- [x] This PR is ready to go

HISTORY.md

@@ -1,6 +1,10 @@
 # History
 
-## 0.7.1 (Forthcoming)
+## 0.7.1
+
+This release introduces the
+[QDHF tutorial](https://docs.pyribs.org/en/stable/tutorials/qdhf.html)! It also
+makes a couple of minor usability improvements, such as better error checking.
 
 ### Changelog
 

ribs/__init__.py

@@ -2,7 +2,7 @@
 
 __author__ = "ICAROS Lab pyribs Team"
 __email__ = "team@pyribs.org"
-__version__ = "0.7.0"
+__version__ = "0.7.1"
 
 from ribs import archives, emitters, schedulers
 

setup.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.7.0
+current_version = 0.7.1
 commit = True
 tag = False
 

setup.py

@@ -112,6 +112,6 @@
     python_requires=">=3.8.0",
     test_suite="tests",
     url="https://github.com/icaros-usc/pyribs",
-    version="0.7.0",
+    version="0.7.1",
     zip_safe=False,
 )