Merge pull request #1940 from prod-feng/master

From Feng

Merge branch 'main' of https://github.com/prody/ProDy into prody-master

Merge pull request #1734 from jamesmkrieger/prody-master

fix secstr writing

add write params

Merge pull request #1652 from jamesmkrieger/v2.4.0_release_prep

release prep

Merge pull request #1616 from jamesmkrieger/prody-master

pre-release v2.3.1

Update v2.3_series.rst

Merge pull request #1607 from jamesmkrieger/buildPDBEns_docs

fix atommaps docs

Merge pull request #1558 from jamesmkrieger/release_v2.2.0

release prep for v2.2.0

Merge pull request #1541 from jamesmkrieger/prody-master

bump version and release note v2.1.2