first implementation of map with wall growing
added path to unknown message
worked on region growing in map + implemented first version of pathfinder to unknown cells in map
fixed error to visit cells multiple times
added debug output
removed some old debug output
fixed erro in pathToUnknown creation
fixed searchCell comparison function to minimize path costs, added bool to finally disable exploration
removed old code
do not search for new path if currently following another one
decreased sensitivity for occupied map cells in front
fixed typo in path building
add target point for maze exploration separately
set explorationTarget when new path is found
added path visualization
added front + back ir sensor readings
added check if path to unknown cell is still free
take original orientation into account when computing path to next unknown cell
send empty path when aborting path follow
changed debug output