Stephen Pike

This adds a `--nullcount` option to `xsv stats` that keeps track of the number of null values for each column as requested in https://github.com/BurntSushi/xsv/issues/48. I just added a single counter...

Timecop is incompatible with the newest patch version of Psych (4.0.5) because of [this change](https://github.com/ruby/psych/compare/v4.0.4..v4.0.5#diff-6a459e056cadf37665f54005bd2dde09d9ba8e66c9807eb0dc67145f9b841771L66-R66). Timecop only allows Date#strptime to be called with the default of Date::ITALY as the fourth...

Possible race condition in postgresql type_map initialization

15

### Steps to reproduce Since upgrading from Rails 7.0 to 7.1 we've started to see the following exception: ``` # activerecord (7.1.3.2) lib/active_record/connection_adapters/postgresql_adapter.rb in get_oid_type undefined method `key?' for nil:NilClass...

ice_cube 0.17.0+ starts using the new "anonymous block argument" feature of Ruby 3.1+ (https://rubyreferences.github.io/rubychanges/3.1.html#anonymous-block-argument). This syntax is incompatible with Ruby 3.0 and below, but the gemspec allows installing ice_cube with...