add file creation log
Merge pull request #12 from MarkG/master

add TimeAmountFile creation log
fix bug that erroneously appended to .gz files
Merge pull request #13 from dustismo/hotfix/timeamountappender

fix appender bug
add tostring
clean up scope, and some logging, bug fixes
Merge pull request #14 from dustismo/hotfix/timeamountappender

timamount file appender fixes