Split nissy in other repos, see README.md

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diff --git a/TODO/2.1.md b/TODO/2.1.md
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-# TODO-list for version 2.1 (or is it 3.0 at this point?)
-
-## Rework solver
-
-### 1. Implement minimum viable
-
-* Implement nxopt31 with fst_cube. Remember that the function
-  move_check_solved() should do one axis at the time, so that we don't move
-  everything before checking.
-* test?
-
-### 2. Rework achitecture and file dependencies
-
-* solve.h depends only on moves(alg?) (dependency on step and trans is removed).
-* Other modules have changed dependencies, might as well rework all.
-* Make files smaller, do not include definition in .h, separate
-data from abstract operations.
-* remove cubetypes.h
-* Create a module for multi-step (maybe wait?)
-* Possible changes: in step solver, copy cube only if niss; add cleanup function
-in solver (called by solve()) to free cube and perhaps pruning tables.
-* see various TODO's in files
-
-### 4. More threading options
-
-* Lazy multithread: threads are as independent as possible and only
-merged at the end. Ideal when all solutions of a certain length are requested.
-* (Done) Eager multithread: current implementation, branches communicate the
-number and list of solutions to stop as soon as possible. Good when only one
-solution of a certain depth is required.
-
-## Simplify steps
-
-* Remove one type of rotation.
-* Change steps to choicestep and stepalt to step (or was this already done?).
-
-## Add missing coordinates and steps
-
-* Check the old file for a list. Many are missing.
-* Checkers in steps.c should use coordinates.
-
-## Missing and new commands
-
-* gen
-* freemem
-* twophase
-
-## Easy improvements
-
-* Solve should re-orient the cube if centers are off
-* Solve: add options for -I (inverse only) and -L (linear = normal + inverse).
diff --git a/TODO/build-options.md b/TODO/build-options.md
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-# Build options for memory and multithreading
-
-## Investigate
-
-* Check exactly how much memory is needed for everything.
-* Take note of which parts use threading (solving, genptable, other?).
-
-## Prepare code
-
-* Use define / ifdef or similar to compile and build tables only for the
-  parts to be used.
-* If threads = 1, use a much simpler version of the solve method. Remember
-  that checking if enough solutions have been found is the first thing to
-  do in singlethread (no locking).
-* Do not include pthread if threads = 1. 
-* Only one optimal solver should be compiled.
-* Some simple steps may also need alternatives with smaller tables
-  (e.g. for staying sub 1Gb). For example dr and drfin.
-* If necessary, work out alternatives to "twophase" for low-resource versions.
-
-## Makefile
-
-* Figure out how to change these options via makefile. For example: one
-  variable for the maximum allowed ram and one for the number of threads.
-* (Optional) use a configure script?
-* (Optional) interactive installation script?
-
-## Automate
-
-* Scout for resources during installation and choose best configuration
-  automatically.
-* How to do this in Linux / POSIX?
-* How to do this in Windows?
diff --git a/TODO/documentation.md b/TODO/documentation.md
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-# Documentation
-
-## Big documentation file on nissy's internals
-
-* Coordinates
-* Symcoordinates
-* Pruning tables
-* Coordinate solving
-* fst cube
-* Optimized solver
-* Multithreading
-* Commands etc...
-* Code architecture
-
-## examples.md
-
-* Example file for nissy's website and documentation folder
-* With screenshots!
-
-## Random info
-
-Where to collect random information like this table?
-
-Table pt_nxopt31_HTM
-Base value: 9
-0               1
-1               6
-2              29
-3             164
-4            1433
-5           16772
-6          205033
-7         2513871
-8        30329976
-9       342440769
-10     2815191126
-11     6147967200
-12      524918774
-13           3546
-14              0
-15              0
diff --git a/TODO/easy.md b/TODO/easy.md
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-# Easy things to improve or add
-
-## Improvements
-
-* Silent batch mode without >>>
-* Solutions should be shown sorted: by length first, then by normal moves
-  (no niss) first, then it depends on the step (e.g. EO by axis).
-
-## Old commands and steps
-
-* drcorners (solve corners after DR)
-* Search and improve suboptimal subsequences
-
-## New commands
-
-* notation: show valid moves
diff --git a/TODO/installation.md b/TODO/installation.md
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-# Simplify and improve installation
-
-## Tables
-
-* Make install should generate tables, or add a "make tables" target to
-  generate tables.
-* Make tables should also check for existing files and remove old ones
-  (maybe more for nissy's command than for makefile).
-
-## Correctness
-
-* Add checksum for all generated files.
-* Hard-code results? Check for compatibility problems between different OSes
-  and filesystems - but there should not be any, since we use stdint.h.
diff --git a/TODO/new-feature-ideas.md b/TODO/new-feature-ideas.md
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-# Possible new features and improvements
-
-This file contains non-refined ideas. Once an idea gets refined, it will
-get its own file and more details.
-
-## Steps
-
-* QTM solver
-* 5-side solver (for robots)
-* Other steps (cross, blocks, LSE...)
-
-## UX features
-
-* Save algs as variables and edit them (like in old nissy)
-* Use a logging system for previously run commands, info, results...
-  (e.g. when solving with -c solutions are not shown, they can be logged here)
-* Configurability: add an "alias" command, run config file at startup
-* Input cube state directly instead of moves (ugly from command line / file)
-
-## Improvements
-
-* Optimal solver: when asking only for one solution, scan for upper bound in
-  parallel using a non-optimal (but fast) solver (e.g. twophase).
-* Optimal solver: up to a small bound, try with a small pruning table.
-* Optimal solver: start at different depths in parallel
-* Multi-step solver: make more general
-
-## New features
-
-* Allow user to specify moveset manually (see issue \#5 on github)
-* EO analysis (and also DR and HTR analysis): group similar EOs (Jay)
-* HTR "maze" analysis?
diff --git a/TODO/parser.md b/TODO/parser.md
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-# Improve command parser
-
-First, expand this TODO file to be more precise.
-
-## Refactor
-
-* The syntax of a command's options should be described by data, not by a
-  parser function.
-* A single parser function can then parse options for all commands.
-
-## Usability
-
-* Better error messages!
diff --git a/TODO/refactoring.md b/TODO/refactoring.md
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-# Refactoring
-
-## Init functions
-
-* All .h files should have a single init function.
-* This function should initialize everything that this module needs, including
-  calling the init functions of the modules it depends on.
-* To avoid multiple initialization of the same module, each should have a
-  static bool initialized variable.
-* Everything that a module needs should be initialized by init(), avoid
-  initializing stuff when solving. Exception: pruning tables, move tables.
-* Most functions should generate some tables and save them to disk.
-* Init functions should have a consistent structure (e.g. the way they check
-  if the tables are already generated should be the same).
-
-## Cube types
-
-* Get rid of cubetype.h, split type definitionss into the other modules.
-* Every type definition should be in the most fundamental module that needs it.
-
-## Code style
-
-* Stop declaring all variables at the beginning of a function.
-* Remove variable names from prototypes.
-* Sort function implementations alphabetically, ignore static vs non static.
-* Rename functions and variable to have a consistent naming scheme.
-* Functions that copy data: swap src and dest, follow memcpy standard.
-* Read style(9) and decide what to implement.
diff --git a/TODO/testing.md b/TODO/testing.md
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-# Testing
-
-## Write tests
-
-* Write tests for each module. Some of might require refactoring (this is
-  a good thing!)
diff --git a/TODO/webapp.md b/TODO/webapp.md
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-# Towards a nissy webapp
-
-## Architecture
-
-* Split in client / server.
-* Server can load and keep in memory all the tables, client(s) send messages to
-  the server to run commands.
-* Use UNIX sockets only first, maybe later try WinSock.
-
-## Simple webapp
-
-* Investigate how to use fastcgi, try simple program first.
-* Decide what limits to put in terms of resources and write a "filter" script
-  to block big requests (maybe use a timeout).
-
-## Advanced webapp
-
-* Use cubing.js for nice graphics.
-* Port it to a graphical desktop version too.