Merge pull request #223 from dpefour/master

convert_muxfx_to_luts: removed -quiet when the command is called inside ...

Regression passed. Merging pull request
Fixing typo in comment header of get_leaf_cells
Merge pull request #224 from wildingd/master

Fixing typo in comment header of get_leaf_cells
Adding my signature to legal.txt
Merge pull request #225 from wildingd/master

Adding my signature to legal.txt
Fixed issue inside convert_muxfx_to_luts and added regression test for it. Updated designutils version to 1.5