In an effort to reduce maintenance, I suggest moving to using AppVeyor for CI/CD exclusively now that it supports building on Linux in addition to Windows.

What will be lost is validating builds against OS X and Mono, but I think that's an acceptable trade-off. If there are issues with either, we can count on people repor

It's hacky because of a leaky abstraction: marking a property by an attribute to specify it as a column - is an implementation detail and it's quite low-level. If we need to say 'this property is a column' in a generic way - there must be a higher-level entity/API of doing so (without using attributes).
Think it the other way - IMetadataReader returns an attribute which is really not there (not o

SessionFactoryImpl.Close currently allows the body of the function to be run multiple times as it does not check if it is closed prior to proceeding. This should be changed so that Close when called from Dispose does nothing when Close has been called by the application.

On a general level I am not an expert in NHibernate or FluentNHibernate. I need your help to collect all the improvements and bugs that have been lost in the past and are relevant, and the following NHibernate improvements.

We can just break down everything in Features, Improvements and Bugs. If a new idea or bug just open a issue, if not leave here the reference to the issue or PR (example: #1