fix: reading LHE files 1.0, 3.0 ; w/ & w/ out lines starting w/ #, weightgroup tag can have attribute name

[UCSC-EarlAlmazan]

• fixed bug with comment lines when reading LHE files version 3.0
• weightgroup can have attribute type or name, which allows for reading of LHE files version 1.0
• included version number of currently read LHE file in read_lhe_init function

[UCSC-EarlAlmazan]

Seems the similarities between files before and after aren't being identified, resulting in merge conflicts.

Main changes in the new init.py are:

• Lines 185-186 ; Reading LHE file version
• Lines 199-203 ; alternative fix for including "name" attribute reading
• Line 233 ; Including a check to omit lines starting with "#" when iterating over particle_objs.

[eduardo-rodrigues]

Hello @UCSC-EarlAlmazan, I'm trying to finalise on a couple of long-standing issues and as you can see from PR #103, it fixes one of the issues you raised also. I will have more in the pipeline ... Will you be available to rebase and clean your MR up, once #103 gets merged, or else shall I go ahead and "cherry-pick" the actual improvements introduced here? It might actually be simpler to make a new and clean MR with a "cherry-pick" of the few lines that changes, which you list above. Let me know.

[eduardo-rodrigues]

FYI @UCSC-EarlAlmazan I went ahead with implementing the diff in PR #139.