Update stable version in repo from 1.4.1 to 1.6.4

[GermanBluefox]

Think about update stable version to 1.6.4

Version: stable=1.4.1 (182 days old) => latest=1.6.4 (30 days old)
Installs: stable=3612 (57.49%), latest=243 (3.87%), total=6283

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Do not close this issue manually as a new issue will be created if condition for update still exists.

Please drop a comment if any reason exists which blocks updating to version 1.6.4 at this time.

Note: This is an automatically generated message and not personally authored by bluefox!
@mcm1957 for evidence