Declare Bundle export package for OSGi consumers

Conflicts:

	ccw.core/META-INF/MANIFEST.MF
Editor gets forward/backward slurp/barf
Revert "Using 'ns instead of 'in-ns to change namespace"

This reverts commit 7121cc9b48008302f931c3232b06fd0e9f214a6c.

Conflicts:

	ccw.core/src/java/ccw/repl/REPLView.java
better .gitignore

Conflicts:

	ccw.core/.gitignore
Switch to Leiningen 2.1.2