Bug#916548: python3.7: Version constraint in pyzo breaks is too strict

[Adrian Bunk]

Package: python3.7
Version: 3.7.2~rc1-1
Severity: important

The following packages have unmet dependencies:
 python3.7 : Breaks: pyzo (< 4.6) but 4.4.3-1.1 is to be installed

The Breaks should be lowered to
  pyzo (<< 4.4.3-1.1~)