Create exel-app, added libs to make redactable tables

.editorconfig

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+root = true
+
+[*]
+end_of_line              = lf
+charset                  = utf-8
+trim_trailing_whitespace = true
+indent_brace_style       = K&R
+curly_bracket_next_line  = false
+spaces_around_operators  = true
+max_line_length          = 120
+tab_width                = 2
+indent_size              = 2
+continuation_indent_size = 4
+indent_style             = tab
+insert_final_newline     = true
+
+[*.py]
+indent_style             = space
+indent_size              = 4
+continuation_indent_size = ignore
+max_line_length          = off
+
+[*.{vue,html,md,mustache,jsp,tag}]
+tab_width=4
+indent_size=4
+max_line_length = off
+
+[*.{vue,ts,js}]
+quote_type = single
+
+[*.{vue,ts,js,php,md,less,scss,saas,css,tsx,jsx}]
+indent_style = space
+
+
+[*.min.*]
+indent_style             = ignore
+trim_trailing_whitespace = false
+insert_final_newline     = ignore
+max_line_length          = 6000
+
+[*.{php,md,vue,html,mustache,jsp,tag,tsx,jsx}]
+trim_trailing_whitespace = false

.gitattributes

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+# Auto detect text files - normalize line endings to LF on checkin
+* text=auto
+
+# Text files - normalize line endings to LF on checkout
+*.ts text eol=lf
+*.js text eol=lf
+*.ejs text eol=lf
+*.jsx text eol=lf
+*.vue text eol=lf
+*.html text eol=lf
+*.css text eol=lf
+*.less text eol=lf
+*.scss eol=lf
+*.yml text eol=lf
+*.json text eol=lf
+*.md text eol=lf
+*.tag eol=lf
+*.jsp eol=lf
+*.json eol=lf
+
+.babelrc text eol=lf
+.editorconfig text eol=lf
+.eslintignore text eol=lf
+.eslintrc text eol=lf
+.flowconfig text eol=lf
+.gitattributes text eol=lf
+.gitignore text eol=lf
+.gitkeep text eol=lf
+.htmlhintrc text eol=lf
+.modernizrrc text eol=lf
+
+# Binary files
+*.ico binary
+*.jpg binary
+*.gif binary
+*.png binary
+
+*.eot binary
+*.ttf binary
+*.woff binary
+*.woff2 binary
+
+*.mp3 binary
+*.mp4 binary
+*.webm binary
+*.ogg binary

.gitignore

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 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+
+# Compiled output
+/dist
+/tmp
+/out-tsc
+/bazel-out
+
+# Node
+/node_modules
+npm-debug.log
+yarn-error.log
+
+# IDEs and editors
+.idea/
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# Visual Studio Code
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history/*
+
+# Miscellaneous
+/.angular
+.sass-cache/
+/connect.lock
+/coverage
+/libpeerconnection.log
+*.log
+/typings
+
+# System files
+.DS_Store
+Thumbs.db
+desktop.ini

TODO

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+[ ] find Grid components and to get choice
+    [ ] let's make some choice to use
+[ ] find Math components
+[ ] integrate Grid into this project
+[ ] let's start 1st view with the Grid
+[ ] studying events in cells and try to use it to integrate Math component to calculate 
+[ ] create in GitHub this proj and pub all files as a 1st branch
+
+[ ] try to use console Git commands
+[ ] find some chart components
+[ ] make choice and integrate some diagram into our Excel app
+
+[ ] npm i immutability-helper react-contenteditable
+[ ] npm i clsx