Neos bugfix releases: 3.3.26, 4.0.1920 4.1.19, 4.2.15, 4.3.6 & 5.0.3

[daniellienert]

I tagged bugfix releases for Neos. They fix bugs and inconveniences, as is to be expected.

See the changelogs for details:

• Neos - 3.3.26 ChangeLog
• Neos - 4.0.20 ChangeLog
• Neos - 4.1.19 ChangeLog
• Neos - 4.2.15 ChangeLog
• Neos - 4.3.6 ChangeLog
• Neos - 5.0.3 ChangeLog

Thanks to those who contributed!