Dear FeynCalc users,

as some of you might have noticed, FeynCalc code always included many functions whose usefulness was not
immediately clear even for long-time users. The majority of these symbols and functions were introduced in the 90s and
early 00s for some very specific QCD calculations but did not evolve further since then. What is worth, the corresponding
code was largely unmaintained and prone to break upon larger changes of the FeynCalc code base.

In order to make the code base more manageable and clean, I decided to move those routines into a separate
add-on called FeynCalcLegacy.

https://github.com/FeynCalc/feyncalc/tree/master/FeynCalc/AddOns/FeynCalcLegacy

You can access them via

$LoadAddOns = {"FeynCalcLegacy"};
<< FeynCalc`

meaning that they won't be available by default when loading FeynCalc.