Prepare release 1.5.0-rc4
Prepare release v1.4.6
Prepare release 1.5.0-rc3
Prepare release v1.5.0-rc2
Prepare release v1.4.5
Prepare release v1.5.0-rc1
Prepare release v1.4.4
Release v1.4.3
Freeze version of mkdocs-material.
Fix mkdocs version