New time line

Changes include:

• Time line is now based on a long long rather than int for more flexibility.
• Particles only carry a char to indicate their time bin rather than two int for their start and end of time-step.
• The kick task is not split in kick1, kick2 and timestep.
• When compiling with the debugging checks, we verify that the particles have been properly drifted and kicked before any interaction.

Added 75 commits:

• d949df55...a472cc11 - 73 commits from branch master
• 08c03ac8 - Merge branch 'master' into new_timeline
• 663db381 - More time integration checks

Added 1 commit:

• da06a73c - Removed unnecessary parameters for the kick functions.

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• 2b8b4e50 - Initialisation step OK

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• 6264dfea - No unnecessary parameters

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• 8ac9c614 - Updated Minimal-SPH to the new scheme

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• b30fa01c - Updated PressureEntropy-SPH to the new scheme

Added 1 commit:

• ed505bf4 - Make GIZMO compile in the new scheme.

Added 1 commit:

• 541745c2 - Updated the cooling to the new integration scheme

Added 11 commits:

• 541745c2...c8779c7f - 6 commits from branch master
• 8e101be6 - Create ICs for cooling box in a better way.
• bd9e87ee - Merge branch 'master' into new_timeline
• ac592f05 - Updated the cooling box example.
• ef8184b8 - No spurious factor of two in the radiateed energy statistics calculation
• 226ff24a - Also updated the Minimal hydro scheme to the new cooling way

Added 2 commits:

• be7b197a - Finish the force calculation before triggereing the cooling.
• fa9b8f22 - Cooling also fine with Pressure-Entropy

Added 2 commits:

• 4736f028 - Bug fix
• 39804a1b - Clearer code

Added 1 commit:

• 20f932f3 - Fixed all the tests but three.

Added 1 commit:

• 1bf1c007 - Fixed the remaining tests

Title changed from [WIP] New time line to New time line

Reassigned to @pdraper

This is now ready to go. Passes all the tests and returns the correct answer on all the examples.

Will crash when using MPI and the debugging checks as this does not correct the problem of missing drifts in MPI land.

Added 1 commit:

• 3860cd84 - Missing file

Added 1 commit:

• 329de16d - Small fixes to pass all tests from the suite on cosma.

mentioned in issue #196 (closed)

Added 1 commit:

• fb4709d9 - Code formatting