Fixed things related to plotting  Maass forms in the unit disk model
Merge branch 'master' of https://github.com/sehlen/psage into stephan_fix
Added a new testing routine
Added algorithms for Bessel function with real parameter K_r(x)
Added support for small eigenvalues through specifying negative R
Merge branch 'master' of github.com:fredstro/psage into devel
Fix some errors, where .list() was used but did not exist
Fix dimension formula for modular forms (non-cusp) and trivial module