added initial version of Atomic Line List service [WIP]

This will fix issue #290. Support for more parameters is missing but will come soon.

Edit: The docstring for the method ``query_object`` needs to be fixed as well.
This looks good.  For maintenance purposes, it would be good to include an example 2-3 line Header + data set in the comments (so one can easily see what all these `.strip`/`.replace` operations are doing)