Update de.lua
Updated Lua 5.3 build scripts.
Added Lua 5.3 (beta) support and binaries.
Added `AddPackage` and `RemovePackage` methods (#166).
Updated outline to use `AddPackage` method (#337).
Updated code based on static analysis suggestions.
Updated `AddPackage` to assign package file name (#166).
Updated handling of extensions to allow more symbols in extensions.
Added hiding/showing files by type in the project/filetree (closes #375).
Added marking file after showing files in the tree (#375).
Fixed not hiding directories when files without extension are hidden (#375).
Updated eo translation.
Corrected a few things.
Added unindent on backspace (controlled by `editor.backspaceunindent`).
Fixed column indicator on lines with tabs (fixes #379).
Reduced unnecessary editor processing to improve performance (#352).
Reduced rate of toolbar UI checks to improve performance (fixes #352).
Updated markup processing to allow for 3+ markup sequences.
Updated markup processing to support links in non-editor documents.
Added creating italic font if only the main one is provided.