Pin pyperf to 2.8.0

Update test_commands to reflect a change how pyperf reports data.

Author: diegorusso

pyperformance/requirements/requirements.txt

@@ -10,5 +10,5 @@ psutil==5.9.5
     # via
     #   -r requirements.in
     #   pyperf
-pyperf==2.7.0
+pyperf==2.8.0
     # via -r requirements.in

pyperformance/tests/test_commands.py

@@ -399,7 +399,7 @@ def test_compare_single_value(self):
             Performance version: 0.2
 
             ### call_simple ###
-            7896.0 kB -> 7900.0 kB: 1.00x larger
+            7896.0 KiB -> 7900.0 KiB: 1.00x larger
         ''').lstrip())
 
     def test_compare_csv(self):
@@ -458,11 +458,11 @@ def test_compare_table_single_value(self):
 
             Performance version: 0.2
 
-            +-------------+-----------+-----------+--------------+------------------------------------------+
-            | Benchmark   | mem1.json | mem2.json | Change       | Significance                             |
-            +=============+===========+===========+==============+==========================================+
-            | call_simple | 7896.0 kB | 7900.0 kB | 1.00x larger | (benchmark only contains a single value) |
-            +-------------+-----------+-----------+--------------+------------------------------------------+
+            +-------------+------------+------------+--------------+------------------------------------------+
+            | Benchmark   | mem1.json  | mem2.json  | Change       | Significance                             |
+            +=============+============+============+==============+==========================================+
+            | call_simple | 7896.0 KiB | 7900.0 KiB | 1.00x larger | (benchmark only contains a single value) |
+            +-------------+------------+------------+--------------+------------------------------------------+
         ''').lstrip())