changed loggers to non-static declarations

Signed-off-by: Kai Kreuzer <k.kreuzer@telekom.de>
Merge pull request #125 from qivicon/staticlogger-fix

changed loggers to non-static declarations
Add support for WeMo Insight power measurement - second attempt

Signed-off-by: Hans-Jörg Merk <hans-joerg.merk@t-online.de>
Merge pull request #127 from hmerk/wemo_insight

Add support for WeMo Insight power measurement - second attempt