closes #11: use threading.current_thread() and name in Python versions post 2.6

[JnRouvignac]

Keep using the old names currentThread() and getName() for Python versions pre 2.6

[JnRouvignac]

Hello @pekkaklarck, would you have any feedback on this PR?

Sorry if I am a insistent on this, the output in our software is completely drowned into these messages. The terminal is almost entirely filled with repetitions of the following two lines (hundreds and hundreds of lines):

/home/jnr/git/mysoft/dependencies/lib/python3.10/site-packages/robotbackgroundlogger.py:83: DeprecationWarning: currentThread() is deprecated, use current_thread() instead
/home/jnr/git/mysoft/dependencies/lib/python3.10/site-packages/robotbackgroundlogger.py:83: DeprecationWarning: getName() is deprecated, get the name attribute instead

Merging this PR and releasing this code would significantly improve our use case.
Thanks!

[JnRouvignac]

We have found a workaround with Python's warnings.filterwarnings() method.

Adding the following line to your program stops these deprecation warnings:

warnings.filterwarnings(action='ignore', 
                        category=DeprecationWarning,
                        module='robotbackgroundlogger',
                        message='(currentThread|getName)\(\) is deprecated, use .*')

[JnRouvignac]

Hello @pekkaklarck, please have a look at this PR if you get a chance. Thank you very much!

[JnRouvignac]

Hello @pekkaklarck, I am coming back almost 3 years later.
Please have a look at this PR if you get a chance. Thank you very much!