QCAD 3 RC5

[andrew]

This release fixes a few bugs and greatly improves stability.

ECMAScript Debugger

Previous RC releases had the ECMAScript debugger enabled by default. This turned out to lead to unpredictable crashes in various situations. QCAD 3 RC5 has the ECMAScript debugger disabled by default. If you need the script debugger, you can enable it by running QCAD with the -enable-script-debugger command line switch.