v0.2.2 Saluton Mondo

This release contains two hotfixes and a new localization. No breaking changes.

Fixes:

• Bug: In certain languages, parse.extract_datetime() returns 08:00 when no datetime is found, instead of returning None (Issue #117, PR #118)
• Error: SyntaxWarnings in newer Python releases, caused by misuse of is in lingua_franca.format (PR #112)

New Localizations:

• parse.extract_duration() localized for German/primary lang code de (PR #119)

Contributors:

• @forslund (extract_datetime() fix)
• @PureTryOut (SyntaxWarning fix)
• @emphasize (extract_duration() to German)

and a big thanks to @ChanceNCounter for facilitating the release!