Merge branch 'hotfix-4.3.1'
Update the license installer to put licenses in the HKLM\ParticularSoftware\NServiceBus, #1852

Modify the core to read license from the new location (HKLM\ParticularSoftware\NServiceBus), #1852
Modify the core to read license from the old locations as well (4.0, 4.1, 4.2, 4.3), #1852
Update the licenseinstaller.exe according to the above, fixes #1850, related to #1852
Update init.ps to use package version instead of the cmdlet, fixes #1849, related to #1852
Bus failing to publish interface-defined event when messageConstructor not defined, fixes #1851
Fixes #1861
Relates to #1861
Merge branch 'hotfix-4.3.2' into develop