Make function API's consistent

[adnathanail]

Closes #84

[github-actions]

(execution 4398262819 / attempt 1)

Shortest path/Random graph/3000 nodes

                        time:   [76.296 ms 76.333 ms 76.369 ms]
                        change: [+0.7057% +0.7616% +0.8157%] (p = 0.00 < 0.05)
                        Change within noise threshold.
Shortest path/DIMCAS d1291/1291 nodes

                        time:   [7.1682 ms 7.1899 ms 7.2134 ms]
                        change: [+12.715% +13.088% +13.491%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 18 outliers among 100 measurements (18.00%)
  1 (1.00%) high mild
  17 (17.00%) high severe
Number of nodes: 28092
Graph initialised
Nodes added
Edges added
Shortest path/OSM Monaco/9936 nodes

                        time:   [958.14 µs 958.55 µs 959.05 µs]
                        change: [+0.1740% +0.2501% +0.3488%] (p = 0.00 < 0.05)
                        Change within noise threshold.
Found 8 outliers among 100 measurements (8.00%)
  3 (3.00%) high mild
  5 (5.00%) high severe
Shortest path/DIMACS USA-road-d.NY/264346 nodes

                        time:   [58.348 ms 58.494 ms 58.640 ms]
                        change: [-1.0270% -0.6519% -0.2780%] (p = 0.00 < 0.05)
                        Change within noise threshold.

Travelling salesman/DIMCAS d1291/1291 nodes

                        time:   [25.416 ms 25.429 ms 25.443 ms]
                        change: [+0.2273% +0.2893% +0.3561%] (p = 0.00 < 0.05)
                        Change within noise threshold.
Found 6 outliers among 100 measurements (6.00%)
  1 (1.00%) low mild
  2 (2.00%) high mild
  3 (3.00%) high severe
Number of nodes: 28092
Graph initialised
Nodes added
Edges added
Travelling salesman/OSM Monaco - 5 random nodes/5 nodes

                        time:   [57.645 µs 57.659 µs 57.675 µs]
                        change: [-5.2194% -5.1947% -5.1689%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 8 outliers among 100 measurements (8.00%)
  5 (5.00%) high mild
  3 (3.00%) high severe

Number of nodes: 28092
Graph initialised
Nodes added
Edges added
Connected components/OSM Monaco/28092 nodes

                        time:   [57.281 ms 57.353 ms 57.426 ms]
                        change: [-0.0935% +0.0706% +0.2342%] (p = 0.41 > 0.05)
                        No change in performance detected.
Found 1 outliers among 100 measurements (1.00%)
  1 (1.00%) high mild