Updated the changelist
Version 0.38
Move ChangeActionTest.doTest() to VimTestCase.

This method is convenient in other tests as well.
Add tests for case changing operations

Add tests for the following commands:
- gu, gU, g~ in normal mode
- u, U, ~ in visual mode
Add unit tests for Ex ranges

Adds tests for ranges in Ex commands. Almost every kind of range has
basic tests, except the following are still totally untested:
    - \/, \?, \&
    - register ranges
    - syntax errors in ranges
Add testcase for '>' in visual block mode
Add unit tests for some replace commands

Adds tests for: |r|, |s|, |R|, and <Ins> in insert mode.
Add tests for change number operations (<C-A>, <C-X>)
Add few simple mark tests.