Merging branch 'fixURLs'  into 'r20.0'.

See merge request !1533

Merging branch 'i469'  into 'r20.0'.

See merge request !1532

Merging branch 'corr303'  into 'r20.0'.

See merge request !1530

Merging branch 'corr302'  into 'r20.0'.

See merge request !1529

Merging branch 'corr301'  into 'r20.0'.

See merge request !1527

Merging branch 'modifyCHANGELOG'  into 'r20.0'.

See merge request !1522

Merging branch 'write_thread'  into 'r20.0'.

See merge request !1523

Merging branch 'corr300'  into 'r20.0'.

See merge request !1526

Merging branch 'corrBaseURL'  into 'r20.0'.

See merge request !1524

[i496j] Failed assertion throws runtime_error; message box moved to GUI main loop try..catch wrapper (#496) ()

Merging branch 'i496j'  into 'r20.0'.

See merge request !1518

Merging branch 'fixCI'  into 'r20.0'.

See merge request !1520

Failed assert also writes to stderr. Extended try block in main.cpp. MsgBox launched from newly created app.

[i496h] GUI JobWorker: extend 'try' coverage; rm special treatment for impossible case of no m_simulation ()

Merging branch 'i496h'  into 'r20.0'.

See merge request !1519

Merging branch 'msgs1'  into 'r20.0'.

See merge request !1521