predef eeg multichannel

[behinger]

I added multichannel support, something I need relatively often

• docstring adapted
• unittest

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• initial sequence tryout
• fix bug in predef_eeg
• fix \beta missing
• forgot the end
• half way through to success for sequence designs or something
• everythinig except sequencelength seems to be working now
• added string sequence tests
• small doc update
• added jitter to the '_' trial divisor
• generalized LinearModelComponent to arbitrary functions instead of vectors
• bugfix with endless loop due to multiple dispatch
• function component for multi-subject
• forgot to define offset in LinearModelFunction
• Improve documentation especially quickstart, home and power analysis
• adapted the order of reference overviews and adapted titles
• Updated quickstart page
• minor changes
• fixed docstrings for predef_eeg and predef_2x2
• added draft of design types reference page
• Update quickstart.jl
• Add UnfoldSim logo to the documentation
• Finished experimental design reference page
• Replace logo file
• Update logo file
• Delete docs/src/assets/logo.svg
• Add logo as png file
• Added intro paragraph for Simulate ERP tutorial
• Improved docstrings for single- and multi-subject design
• Fixed simulate docstring
• Added cross references in docstrings
• Added intro sentences, matched titles and sidebar, reordered pages and added collapsible setup blocks
• Update noise.jl
• Update src/noise.jl
• Update src/noise.jl
• Update src/noise.jl
• add empty line for formatting reasons
• Update docs/literate/reference/noisetypes.jl
• Update docs/literate/reference/overview.jl
• Update docs/literate/reference/overview.jl
• Update docs/literate/reference/noisetypes.jl
• added docstring
• renamed to have the formula at the end
• merge fix, double definition of function
• component function test + docstring
• better docs
• added unittests
• fixed small wording
• fix tutorial with v0.3 renaming of simulate to simulate_component
• fix newComponent tutorial
• initial version of TRF simulation
• ** improved tutorial**
• fix doilink
• maybe fix the interonset problem?
• Apply suggestions from code review
• added multichannel predef