[texworks] new *experimental* builds

[Jonathan Kew]

For those who like to live on the "bleeding edge", I have posted new Mac and Windows builds of the development version of TeXworks (built from Subversion trunk r.567). These include scripting support for QtScript, Lua, and Python, as well as various other minor enhancements and bug-fixes.

As always, feedback is welcome. Note that these builds implement the "new" scripting APIs using the "TW" global, so older scripts will need updating; e.g., the former "target" or "TWTarget" object is now addressed as "TW.target", etc.

JK