• updated DecodeOctal function to operate with runes instead of bytes. previously it returned error on any not printable symbol that applies to every unicode symbol
• updated PostgreSQL data coder/decoder. now it uses info from the ColumnEncryptionSetting and always encodes into hex/octal format if destination type is not specified as text. Acra expects bytea/blob type on database side and default dest type is binary. Postgresql's bytea type expects hex/octal string, it doesn't work with escaped strings E''
• updated integration tests to use unicode strings

Checklist

• Change is covered by automated tests
• The coding guidelines are followed
• Public API has proper documentation in the Acra documentation site or has PR on documentation repository
  with new changes
• CHANGELOG.md is updated (in case of notable or breaking changes)
• CHANGELOG_DEV.md is updated
• Benchmark results are attached (if applicable)
• Example projects and code samples are up-to-date (in case of API changes)