This is the release 4.3.0 of Itcl.

It is intended to be script compatible with Itcl 4.0.* and Itcl 3.4.* .
It very likely presents the same public C interface as Itcl 4.0.* .
It includes incompatible changes to internal structs when compared
with Itcl 4.0.* .  Unfortunately, the extension Itk 4.0.* intrudes
in those internals and will notice and break in the presence of Itcl 4.1.* .
When you upgrade to Itcl 4.1 , you must also upgrade to Itk 4.1 .  It
is possible you will find other extensions and applications repeating Itk's
error.

Notes of past releases follow below
-----------------------------------

Starting with release 4.3.*, Itcl attempts to support multi-thread operations

The difference to 4.0.*: in this release there are only bug fixes from SF and the fossil bug tracker for itcl.

This is the first stable release of Itcl 4.0.
It is a new major release of Itcl.

The difference to 4.0b7: Tighter control on the set of exported functions.

The difference to 4.0b6: Updated TEA system and related build system changes.

The difference to 4.0b5: in this release there are only bug fixes from SF
tracker and updates for using Tcl 8.6 version from fossil repo trunk

The difference to 4.0b4: in this release there are only bug fixes from SF
tracker and updates to TEA 3.9.

The difference to 4.0b3: in this release there are only bug fixes from SF
tracker and some fixes to run on OSX and Windows platform.

There is no known incompatibility.