Converter improvements

[germa89]

Adding filename_out kwarg.

Replacing ending line with "\n". See https://docs.python.org/3/library/os.html#os.linesep

Adding spacing between code parts.

The style check won't pass because of LARG and SMAL commands.

Close #1468

[akaszynski]

Looks like we need to add some words to ignore_words.txt.

[germa89]

I thought that the style checker only happened in the edited/change text. It seems it happens always everywhere, so I'm adding the words in another PR (#1476 ) which I will merge first.

[codecov]

Codecov Report

Merging #1470 (8c89968) into main (b67b2ce) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1470      +/-   ##
==========================================
+ Coverage   80.32%   80.38%   +0.05%     
==========================================
  Files          43       43              
  Lines        6780     6785       +5     
==========================================
+ Hits         5446     5454       +8     
+ Misses       1334     1331       -3     

[germa89]

LGTM.