reliability: don't hide errors due to missing Logger
Revert "reliability: do not raise exception for missing config file"

This reverts commit edff5439fff9f020bec67bbe3cb2d421c5a64faf.
reliability: do not raise exception for missing subconfig file
bugfix: init additional tables in `sql.postgresStore`
style: PEP8 fixes
style: PEP8 fixes in `web.oaipmhHandler`
reliability: set OAI-PMH namespace prefix in XML responses

This prevents record data from unintentionally inheriting the
OAI-PMH namespace set as default in cases where record XML does
not declare its own XML namespace.
docs: bumped versions and release dates
docs: update CHANGES file
Merge branch 'hotfix/1.1.2'