Fix doctest errors

Author: emstoudenmire

docs/src/AdvancedUsageGuide.md

@@ -756,8 +756,8 @@ Advanced users might notice something strange about the definition
 of the ITensor type, that it is often not "type stable". Some of 
 this is by design. The definition for ITensor is:
 ```julia
-mutable struct ITensor{N}
-  inds::IndexSet{N}
+mutable struct ITensor
+  inds::IndexSet
   store::TensorStorage
 end
 ```
@@ -774,7 +774,7 @@ julia> A = randomITensor(i, i');
 julia> @code_warntype A[i=>1, i'=>2]
 Variables
   #self#::Core.Compiler.Const(getindex, false)
-  T::ITensor{1}
+  T::ITensor
   ivs::Tuple{Pair{Index{Int64},Int64}}
   p::Tuple{Union{Nothing, Int64}}
   vals::Tuple{Any}
@@ -789,7 +789,7 @@ Body::Number
 │   %7  = Base.broadcasted(ITensors.val, ivs)::Base.Broadcast.Broadcasted{Base.Broadcast.Style{Tuple},Nothing,typeof(val),Tuple{Tuple{Pair{Index{Int64},Int64}}}}
 │   %8  = Base.materialize(%7)::Tuple{Int64}
 │         (vals = (%6)(%8, p))
-│   %10 = Core.tuple(T)::Tuple{ITensor{1}}
+│   %10 = Core.tuple(T)::Tuple{ITensor}
 │   %11 = Core._apply_iterate(Base.iterate, Base.getindex, %10, vals)::Number
 │   %12 = Core.typeassert(%11, ITensors.Number)::Number
 └──       return %12

docs/src/ITensorType.md

@@ -53,17 +53,17 @@ delta(::Type{<:Number}, ::QN, ::ITensors.Indices)
 ## Convert to Array
 
 ```@docs
-Array{ElT, N}(::ITensor{N}, ::Vararg{Index, N}) where {ElT, N}
+Array{ElT, N}(::ITensor, ::Vararg{Index, N}) where {ElT, N}
 array(::ITensor)
-matrix(::ITensor{2})
-vector(::ITensor{1})
+matrix(::ITensor)
+vector(::ITensor)
 ```
 
 ## Getting and setting elements
 
 ```@docs
 getindex(::ITensor, ::Any...)
-getindex(::ITensor{N}, ::Vararg{Int,N}) where {N}
+getindex(::ITensor, ::Vararg{Int,N}) where {N}
 setindex!(::ITensor, ::Number, ::Any...)
 setindex!(::ITensor, ::Number, ::Int...)
 ```

docs/src/index.md

@@ -299,7 +299,7 @@ It originates in physics with the purpose of finding
 eigenvectors of Hamiltonian (energy) matrices which model
 the behavior of quantum systems.
 
-```jldoctest; output=false, filter=[r"After sweep [1-5] energy=\-[0-9]{3}\.[0-9]{10,16} maxlinkdim=[0-9]{1,3} time=[0-9]{1,2}\.[0-9]{3}", r"Final energy = \-138\.[0-9]{10,16}"]
+```jldoctest; output=false, filter=[r"After sweep [1-5] energy=\-[0-9]{3}\.[0-9]{10,16} maxlinkdim=[0-9]{1,3} maxerr=[0-9]{1,2}\.[0-9]{1,3}E\-[0-9]{1,2} time=[0-9]{1,2}\.[0-9]{3}", r"Final energy = \-138\.[0-9]{10,16}"]
 using ITensors
 let
   # Create 100 spin-one indices
@@ -347,11 +347,10 @@ sweeps = Sweeps
 4 cutoff=1.0E-10, maxdim=100, mindim=1, noise=0.0E+00
 5 cutoff=1.0E-10, maxdim=200, mindim=1, noise=0.0E+00
 
-After sweep 1 energy=-137.845841178879 maxlinkdim=9 time=8.538
-After sweep 2 energy=-138.935378608196 maxlinkdim=20 time=0.316
-After sweep 3 energy=-138.940079710492 maxlinkdim=88 time=1.904
-After sweep 4 energy=-138.940086018149 maxlinkdim=100 time=4.179
-After sweep 5 energy=-138.940086075413 maxlinkdim=96 time=4.184
-Final energy = -138.94008607296038
+After sweep 1 energy=-137.954199761732 maxlinkdim=9 maxerr=2.43E-16 time=9.356
+After sweep 2 energy=-138.935058943878 maxlinkdim=20 maxerr=4.97E-06 time=0.671
+After sweep 3 energy=-138.940080155429 maxlinkdim=92 maxerr=1.00E-10 time=4.522
+After sweep 4 energy=-138.940086009318 maxlinkdim=100 maxerr=1.05E-10 time=11.644
+After sweep 5 energy=-138.940086058840 maxlinkdim=96 maxerr=1.00E-10 time=12.771
+Final energy = -138.94008605883985
 ```
-