Remove debug code.

Add newest results for benchmarks including now AnchorBlock2 with accumulated, block-wise statistics.

Speed up benchmarking by avoiding resizing and fix some bugs.

Bugfix in insert_gap function.

Add contiguous gap check to gap_erase functions and fix more bugs in anchor_blocks2 approach.

Add is_gap flag for location struct and fixed some bugs in op[], erase, insert.

Add new benchmark results and fix loop in benchmark templates.

Simplify op[] logic.

Solved 3 more bugs run into with larger, randomized benchmark.

Remove logical error in helper function 'resize'.

Removed various bugs in resize, locate_gap functions, add resize functionality.

Changed locate function to deviate from std::lower_bound behaviour in that sense that if input positions points into gap, the surrounding gap coordinates are returned. Adjusted insert_gap, erase_gap and operator[] need to be checked.

Use location data type to store block and gap id.

Remove spaghetti code and use lower_bound for all gap structure accessing functions.

Finalize insert/erase_gap in anchor list approach with block statistics. Make data initialization for benchmarks more efficient.