* Fix pdf2txt --boxes-flow=disabled
Fixes:
```
$ pdf2txt.py --boxes-flow=disabled test.pdf
Traceback (most recent call last):
File "tools/pdf2txt.py", line 204, in <module>
sys.exit(main())
File "tools/pdf2txt.py", line 198, in main
outfp = extract_text(**vars(A))
File "tools/pdf2txt.py", line 66, in extract_text
pdfminer.high_level.extract_text_to_fp(fp, **locals())
File "pdfminer/high_level.py", line 85, in extract_text_to_fp
interpreter.process_page(page)
File "pdfminer/pdfinterp.py", line 896, in process_page
self.device.end_page(page)
File "pdfminer/converter.py", line 51, in end_page
self.cur_item.analyze(self.laparams)
File "pdfminer/layout.py", line 822, in analyze
group.analyze(laparams)
File "pdfminer/layout.py", line 575, in analyze
LTTextGroup.analyze(self, laparams)
File "pdfminer/layout.py", line 362, in analyze
obj.analyze(laparams)
File "pdfminer/layout.py", line 575, in analyze
LTTextGroup.analyze(self, laparams)
File "pdfminer/layout.py", line 362, in analyze
obj.analyze(laparams)
File "pdfminer/layout.py", line 575, in analyze
LTTextGroup.analyze(self, laparams)
File "pdfminer/layout.py", line 362, in analyze
obj.analyze(laparams)
File "pdfminer/layout.py", line 577, in analyze
self._objs.sort(
File "pdfminer/layout.py", line 578, in <lambda>
key=lambda obj: (1 - laparams.boxes_flow) * obj.x0
TypeError: unsupported operand type(s) for -: 'int' and 'str'
```
Related: Issue #477, PR #479
* update CHANGELOG
* merge CHANGELOG
* pdf2txt: clean up handling of layout parameter arguments
* avoid specifying default values twice
* construct LAParams earlier, rather than passing its components around
* fix crash with --boxes_flow=disabled
* update CHANGELOG
* construct new LAParams, so _validate runs
* Improve readability of setting LAParams by explicitly copying them from parsed_args into init of LAParams. And move all parsed_args post processing to the parse_args() method.
* Add cli argument for line_overlap
* Also use default values from LAParams for --detect-vertical and --all-texts
Co-authored-by: Pieter Marsman <pietermarsman@gmail.com>
d87bd025dd