slightly reorder preconditioner docs

Author: j-fu

Project.toml

@@ -1,7 +1,7 @@
 name = "ExtendableSparse"
 uuid = "95c220a8-a1cf-11e9-0c77-dbfce5f500b3"
 authors = ["Juergen Fuhrmann <juergen.fuhrmann@wias-berlin.de>"]
-version = "1.3"
+version = "1.3.1"
 
 [deps]
 AMGCLWrap = "4f76b812-4ba5-496d-b042-d70715554288"

docs/src/iter.md

@@ -7,9 +7,7 @@ This functionality probably will be reduced in favor of LinearSolve.jl.
 In this package, preconditioners and LU factorizations are both seen
 as complete or approximate _factorizations_. Correspondingly we provide a common  API for them.
 
-```docs
 
-```
 ExtendableSparse.AbstractLUFactorization
 ```@autodocs
 Modules = [ExtendableSparse]
@@ -67,8 +65,6 @@ nm2 = norm(factorization \ b)
 nm1, nm2
 ```
 
-### API
-Available by default:
 ```@autodocs
 Modules = [ExtendableSparse]
 Pages = ["umfpack_lu.jl",  "sparspak.jl"]
@@ -80,14 +76,6 @@ ExtendableSparse.CholeskyFactorization
 Base.:\
 ```
 
-
-Pardiso extension:
-```@docs
-PardisoLU
-MKLPardisoLU
-```
-
-
 ## Preconditioners
 
 The API is similar to that for LU factorizations.
@@ -136,37 +124,40 @@ nm2 = norm(cg(A, b; Pl = preconditioner))
 nm1, nm2
 ```
 
-### API
-
-#### Recommended 
-Available by default:
-
 ```@docs
 ExtendableSparse.AbstractPreconditioner
 ```
+
 ```@autodocs
 Modules = [ExtendableSparse]
 Pages = ["iluzero.jl","ilut.jl","amg.jl","blockpreconditioner.jl"]
 ```
 
-Extensions:
 ```@docs
-ILUTPreconditioner
 ExtendableSparse.AMGCL_AMGPreconditioner
 ExtendableSparse.AMGCL_RLXPreconditioner
-ExtendableSparse.RS_AMGPreconditioner
 ExtendableSparse.SA_AMGPreconditioner
+ExtendableSparse.RS_AMGPreconditioner
+ILUTPreconditioner
+```
+
+
+## Experimental/deprecated
+
+
+```@docs
+PardisoLU
+MKLPardisoLU
 ExtendableSparse.AMGPreconditioner
 ```
 
 
-#### Experimental
 ```@autodocs
 Modules = [ExtendableSparse]
 Pages = ["jacobi.jl","parallel_jacobi.jl","ilu0.jl",]
 ```
 
-### Iteration schemes
+## Iteration schemes
 ```@docs
 ExtendableSparse.simple!
 ```