See merge request !1352

Closes #226

See merge request !1350

See merge request !1346

See merge request !1345

Plus example of histogram customization (and extension of the unit tests) on a log log histogram

See merge request !1344

See merge request !1333

One used to be able to use e.g. a 2D histogram with a syntac like `++histo[singleNumber]`
The second and missing number wa simply set to 0.

This is now creating a compilation error and a test was added to check that error

See merge request !1347

See merge request !1343

See merge request !1341

See merge request !1340

See merge request !1339

See merge request !1338

See merge request !1337

See merge request !1336

See merge request !1330

Update version of Black used in pre-commit

See merge request !1334

See merge request !1335

See merge request !1331