View source for Changes from V2.x to V3.0

There are many major changes from uGFX V2.x to V3.0. While we have tried to maintain compatibility for most uGFX V2 applications there are some areas that will require re-writing.


== Compatibility ==
The configuration option GFX_COMPAT_V2 is now defined that allows most V2.x code to compile unchanged. It is turned on by default.

More details to come

== Single-File-Make ==
The single-file-make build mechanism now works with all uGFX features.

More details to come

== Type and Constant Changes ==
Many types and constants have been renamed to prevent conflicts with other library, operating systems or other code.

More details to come

== The New GDISP API ==
The GDISP API has been significantly changed.

More details to come

== Multiple Display Support ==
Multiple display support now works very differently.

More details to come

== Adding Drivers To Your Build ==
All drivers are now included using configuration options rather than by linking.

More details to come

== New Driver Format ==
All uGFX drivers now use a new internal API and have been rewritten.

More details to come

== The New GBUS Module ==
Many hardware interface details that needed to be written explicitly into every driver board file are now handled by a new GBUS module.

More details to come

== New Trig Functions ==
There are new triginomic functions that are significantly faster and more accurate than the old functions in GMISC.

More details to come