Fixes a speeling mistake in the binary headers' extension
Adds an error message when creating with another one's name
Implements product_assert_exist assertion
Lets product_create verify the product type
Implements 'make stats'
Implements the color manager extension
Implements the files list extension
Lets 'make clobber' automatically do 'make trash'
Brings wildcard support in files list
Implements test_{products,logs} functions
Implements color_private function
Implements history_colored_rule function
Prints private rules' history in dark grey
Prints test execution in green
Merge branch 'dev'