XUnit regression logging
Cleaned up XUnitReporter inherits from object
adding filename to XUnitReporter
adding repr wrapper around time value
Merge branch 'master' of https://github.com/GordonMcGregor/cocotb into xunit_reporter
XUnit regression logging
Cleaned up XUnitReporter inherits from object
resolved conflicts
Merge pull request #37 from GordonMcGregor/xunit_reporter

Xunit reporter class and logging changes for regression.py