Version 2.0 will be the next major release of NiceGUI. There won't be a version 1.5.
The reason for jumping from 1.4 to 2.0 is mainly to implement proper semantic versioning, which suggests incrementing the major version number when introducing braking changes.

• #2633, #3263, #3525: Improve API for Pandas in ui.table (and ui.aggrid)
• #2399, #3287: client.ip
• #2265, #2301: Improve layout when nesting cards
• #3013: ui.input space for validation
• #1454, #2991: Improve support for third-party libraries
• Improve drawing Leaflet objects (towards #2422)
• Upgrade dependencies
• remove long deprecated APIs, add deadlines to remaining deprecation warnings
• update nicegui-highcharts: zauberzeug/nicegui-highcharts#4