Ervin Pektor

Fixes #27 Added a new test-case for using a node after its children were removed

Uncollapsing after removing and readding children crashes the program

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If a node is collapsed, and its children is removed, and others are added, then the node is uncollapsed the program crashes. Example program: ```rust use cursive_tree_view::{Placement, TreeView}; fn main()...

The IP and domain given [here](https://wiki.sipeed.com/hardware/en/tang/common-doc/install-the-ide.html) does not work, though responds to pings. Currently it is not possible to use the IDE

Footprint mass create, PHP out of memory

1

**Describe the bug** I have tried to mass create footprints (~15k lines), and it returned (understandably) 503 error. After that I tried to batch the creation into smaller parts, but...