Conversions: Fixing version of Convert::Pluggable
Conversions: Adding support for "degrees" prefix on the relevent temperature units
Merge branch 'master' into mintsoft/conversions
Merge branch 'master' into mintsoft/conversions

Conflicts:
	lib/DDG/Goodie/Conversions.pm
Merge pull request #431 from duckduckgo/mintsoft/conversions

Conversions: Fixing Convert::Pluggable versions and "degrees" temperatures