Jumbo 5.4 beta 1 release

Hi all,

I'm pleased to announce that 5.4 beta 1 has finally been released (sorry 
for the delay) and is available from the sourceforge site.

Development on Jumbo's trunk is now version 5.5. 5.4b1 has been moved to 
a branch for bug fixes, and 5.4 will be released when the bugs die off.

From the release report: -

There is new and improved functionality in MoleculeTool, CrystalTool and 
ValencyTool thanks to developments on the CrystalEye project. We 
introduce CMLFragment which supports Markush and polymer structures.  

This release introduces a new version of schemagen that builds 
independently of jumbo and hence removes the bootstrapping problems with 
5.3. Note however that jumbo is tightly coupled to a particular schema 
(here, 2.2).  

The conversion tools in the legacy2cml have been refactored into a 
separate release (coming soon...) in order to reduce the number of 
dependencies caused by the core code.

Best regards,

jim