[NOP] Removing old file consensus_builder_interface.h.
[NOP] Reordering tests.
[FEATURE] Overlap info collection working.
[FEATURE] swap() function for gaps and tristate holder
[INTERNAL] Refactorizing overlap info computation into its own helper.
[FEATURE] Feature complete version of consensus module and test.
[DOC] Updating demo and expected demo output file for consensus alignment.