Fix bug introduced in last commit
Merge pull request #34 from lemurell/master

Fix bug introduced in last commit
Fix one more bug odf the same type
Merge branch 'master' of https://github.com/LMFDB/lmfdb
Merge pull request #37 from lemurell/master

One more bug of the type fixed.
Fix issue #35
Removed constructor of Lfunction
Fix imag_part bug