somebody forgot empty line, InitialConditions codeblock wasn't showing. Fixed.

See merge request !674

C++ build fix: seems that the file c++config.h undef's the max and min macros, the solution is to include something that pulls in that file before we do our own defines (in minmax.h)

See: https://gcc.gnu.org/ml/libstdc++/2016-01/msg00025.html and #489

Change the task splitting criterion for gravity tasks

Closes #457

See merge request !667

Added code snippet to show how to extract particles from a given halo

See merge request !670

Minor documenation update for velociraptor output

See merge request !669

Python scrips in tool sub-directory

See merge request !668

Add P-U with M&M Switch

See merge request !615

Added script to merge ICs spread into multiple files (from Adrian Jenkins' Panphasia) into a single SWIFT-friendly file.

Repartition threadpool

Closes #462

See merge request !663