Created Unassigned: make merging configurable [9]

First of all, this package is awesome. Thank you.
One question: can you add an option to activate/deactivate merge in the ILMerge.props file or a different configuration file?
When working on a new feature, I code and test continuously. Only when all is implemented and tested I will merge assemblies in the end for easier distribution.
When the package is installed, my build wouldn't able to trigger unit/integration tests.
My current workaround is to install/uninstall the package to enable merge/enable tests.