SDB 1.5

• The exit code of the inferior is now printed when available.
• The run command will now run the previous command if no argument is given.
• The step over and step into commands have been reversed so they make sense.
• Improved the build system on Windows.
• Improved performance when waiting on multiple wait handles.
• Bumped the cecil dependency to dotnet/cecil@a6eec3e.
• Bumped the debugger-libs dependency to mono/debugger-libs@6f5f33a.
• Bumped the nrefactory dependency to icsharpcode/NRefactory@b2e003f.