cotangent -> middle in docu
include DefectClasses_code
added comment in method for DefectClasses
in docu: method for DefectClasses implements [GM00, Lemma 2.1]
include DefectGroup_code
better comments in CentralIdempotentsOfInvolutiveAlgebra
sectioning in Algebras.gi
corrected sectioning in Groups.gi
content of Modules.g? is now appears in @Chapter Tools
added missing @Arguments
declared NormalizedUnitaryGroup for IsGroupRing instead of IsRing
renamed NaiveSizeOfUnitaryGroupOfGroupRing ->

ExpectedSizeOfUnitaryGroupOfGroupRingOf2Group
moved declarations/installations from Algebras.g? -> Blocks.g?

namely:
. UnderlyingGroupAlgebra
. UnderlyingBrauerTable

BlockOfIdempotent is now an declared as an attribute
organized order of chapters in doc/Intros.g

(thanks Sebastian Gutsche)
replaced RadicalOfAlgebraPowersAsIntersection by RadicalOfAlgebraPowers

in DefiningIdealOfLowerPartOfUnitaryGroup as the former could become too expensive
and has no advantage here
fixed english in code comment
fixed names of arguments for UnderlyingModule
fixed names of arguments for InducedFiltration
declared UnderlyingModule for IsAlgebra

and installed it for IsAlgebra and HasCoefficientsRingForPolynomialAlgebra