_insert_empty, thanks Alan
uri not None, issue 1336, thanks Anthony
fixed issue 1337, as_dict(...,field_options=True), thanks Alan
allow component that do not reload, thanks Niphlod
using google for QR codes, thanks  黄祥
reverting change to issue 1336
fixed issue 1336 again
fixed issue 1339, faster IS_NOT_IN_DB
fixed issue 1340, bugs in as_dict, thanks Alan
upgraded fpdf to 1.7.1
changed in requires which may have fixed issue 1330
added logging in db._lastsql the CREATE TABLE
writedoc.py
issue 1350, enhance form serialization for services/json output, thanks Alan
patch for sanitizer allowed tags, thanks Alan
scheduler patch, thanks Niphlod
fixed issue VirtualFields in select options
fixed keyed table issue, thanks Denes
no more xxx, thanks Howesc
experimental patch to disable automatic GAE indexing, thanks howesc