Prepare for v1.55 release.

Updated authors list.

Updated git repository URL.

Corrected spelling of "Technology".

Updated change log with recent changes to be includes
in this release.

Updated version numbers of files which have changed
since the last CPAN release.

Update version number of main module to match the release
version.

Correct a POD error.
ACSIS: check for GSDFILE and SCA# headers.

This prevents the test t/das_db.t from failing because it could
also be translated by the ACSIS module.
Add MYMETA.json to .gitignore.
Update Build.PL for current Module::Build.

'gpl' is otherwise interpreted as GPL version 1.
Add more META files to .gitignore.
Update MANIFEST as generated by Module::Build.