v0.4.9: scoped variables; copy-n-paste; rich-text editor

What's Changed

• feat: support scoped variable via proper compile pass by @lihebi in #154
• feat: cross-page single-pod copy-paste in mouse-bound ctrl-v way by @li-xin-yi in #158
• feat: add rich-text node by @lihebi in #160
• fix(ui): remove bg and circle button on scope's bar by @fundon in #153
• fix: deleteRepo using id instead of name by @lihebi in #159
• chore: remove deprecated kernel startup code by @lihebi in #161

Full Changelog: v0.4.8...v0.4.9