4.0.0

• Use spotless (#8) @gnodet
• Fix site generation (#15) @gnodet
• Switch build ci workflow to master branch (#14) @gnodet
• Fix SCM urls (#13) @gnodet
• MXParser tokenization fails when PI is before first tag (fixes #7) (#12) @gnodet
• Deprecate Xpp3DomUtils (fixes #6) (#9) @gnodet
• Use a ArrayDeque (#5) @gnodet
• Upgrade plugins and clean build warnings (#4) @gnodet
• Switch to junit 5 (#2) @gnodet
• Fix parsing an UTF-8 file without BOM and ISO-8859-1 encoding (#1) @gnodet