Apply some picky coding recommendations

[joanise]

PR Goal?

Actually, the real goal is to push an update to main so that heroku integration, which was just cycled, gets exercised.

The changes applied are all things that are no longer needed with recent versions of python:

• io.open instead of open (was useful for Python 2.6/2.7)
• redundant file mode when we're using the default mode
• "{}".format() instead of f-strings
• __future__ imports where that future is now
• -*- coding: utf-8 -*-

Also remove some dead code from utils.py flagged by codecov. That code was long-since unused.

Fixes?

picky details fixed by uvx ruff check --select UP --fix and a few manual fixups after

Feedback sought?

rubber stamping

Confidence?

high

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
tests/basic_test_case.py	35% smaller
readalongs/cli.py	35% smaller
readalongs/api.py	20% smaller
tests/test_g2p_cli.py	20% smaller
tests/test_temp_file.py	10% smaller
tests/test_align_cli.py	3% smaller
readalongs/align.py	2% smaller
readalongs/text/util.py	1% smaller
readalongs/align_utils.py	0% smaller
readalongs/epub/create_epub.py	0% smaller
readalongs/waveform2svg/audio_util.py	0% smaller
readalongs/waveform2svg/make_all_svgs.py	0% smaller
readalongs/waveform2svg/pitch2svg.py	0% smaller
readalongs/waveform2svg/waveform2svg.py	0% smaller
tests/test_anchors.py	0% smaller
tests/test_dtd.py	0% smaller
tests/test_force_align.py	0% smaller
tests/test_make_xml_cli.py	0% smaller
tests/test_misc.py	0% smaller
tests/test_tokenize_cli.py	0% smaller

[codecov]

Codecov Report

❌ Patch coverage is 96.29630% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 95.70%. Comparing base (4ae6d24) to head (9b9af60).

Files with missing lines	Patch %	Lines
tests/basic_test_case.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #300      +/-   ##
==========================================
+ Coverage   95.20%   95.70%   +0.49%     
==========================================
  Files          43       43              
  Lines        3674     3632      -42     
==========================================
- Hits         3498     3476      -22     
+ Misses        176      156      -20     

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[github-actions]

CLI load time: 0:00.05
Pull Request HEAD: 9b9af6021b579fec2633cce878a53b185e1a46f2
No imports take more than 0.1 s.