prevent NPE if session does not exist
readme update
Update cy.properties

Ychwanegu, cwtogi, cywiro a thacluso.
Merge pull request #510 from Cymrodor/patch-1

Update cy.properties
delete old read statuses by chunks in order to avoid large transactions
create a new transaction for each delete chunk
delete operation does not support limit. limit on select and delete afterwards
prevent unintentional entry list reset
1.3.0 release
1.4.0 snapshot
dependencies update
Merge pull request #33 from Athou/master

update to new version