TODO: fix TODOs (a recursive TODO tale) #196
Description
Some TODOs should definitely not be forgotten before we reach version 1, e.g.
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/diagonal.jl#L55
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/diagonal.jl#L113
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/diagonal.jl#L123
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/diagonal.jl#L266
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/diagonal.jl#L272
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/diagonal.jl#L276
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L52
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L55
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L77
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L157
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L190
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L219
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L225
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L228
- https://github.com/Jutho/TensorKit.jl/blob/master/src/auxiliary/linalg.jl#L341
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/vectorinterface.jl#L66
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/vectorinterface.jl#L126
- https://github.com/Jutho/TensorKit.jl/blob/master/ext/TensorKitFiniteDifferencesExt.jl#L28
- https://github.com/Jutho/TensorKit.jl/blob/master/docs/src/lib/tensors.md#L230
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/abstracttensor.jl#L234
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/abstracttensor.jl#L316
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/abstracttensor.jl#L345
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/tensoroperations.jl#L185
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/tensoroperations.jl#L222
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/tensoroperations.jl#L293
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/tensoroperations.jl#L338
- https://github.com/Jutho/TensorKit.jl/blob/master/src/planar/postprocessors.jl#L54
- https://github.com/Jutho/TensorKit.jl/blob/master/src/spaces/gradedspace.jl#L137
- https://github.com/Jutho/TensorKit.jl/blob/master/src/spaces/gradedspace.jl#L267
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/braidingtensor.jl#L57
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/braidingtensor.jl#L110
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/braidingtensor.jl#L172
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/braidingtensor.jl#L183
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/indexmanipulations.jl#L158
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/indexmanipulations.jl#L373
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/indexmanipulations.jl#L418
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/indexmanipulations.jl#L484
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/indexmanipulations.jl#L511
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/indexmanipulations.jl#L607
- https://github.com/Jutho/TensorKit.jl/blob/master/src/fusiontrees/iterator.jl#L27
- https://github.com/Jutho/TensorKit.jl/blob/master/src/fusiontrees/fusiontrees.jl#L202
- https://github.com/Jutho/TensorKit.jl/blob/master/docs/src/man/tensors.md#L1261
- https://github.com/Jutho/TensorKit.jl/blob/master/docs/src/man/tensors.md#L1265
- https://github.com/Jutho/TensorKit.jl/blob/master/docs/src/man/sectors.md#L1255
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/linalg.jl#L167
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/linalg.jl#L181
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/linalg.jl#L233
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/linalg.jl#L328
- https://github.com/Jutho/TensorKit.jl/blob/master/src/tensors/linalg.jl#L347
- https://github.com/Jutho/TensorKit.jl/blob/master/ext/TensorKitChainRulesCoreExt/tensoroperations.jl#L22
- https://github.com/Jutho/TensorKit.jl/blob/master/ext/TensorKitChainRulesCoreExt/tensoroperations.jl#L93
- https://github.com/Jutho/TensorKit.jl/blob/master/ext/TensorKitChainRulesCoreExt/tensoroperations.jl#L134
- https://github.com/Jutho/TensorKit.jl/blob/master/ext/TensorKitChainRulesCoreExt/linalg.jl#L34
- https://github.com/Jutho/TensorKit.jl/blob/master/test/runtests.jl#L62
- https://github.com/Jutho/TensorKit.jl/blob/master/test/braidingtensor.jl#L1