Iwo Dziechciarow

Fix invalid version created_at value when using update_columns

1

Use the default(AR generated) timestamp for the `Version#created_at` value when using `PaperTrail::RecordTrail#update_columns`. `PaperTrail::RecordTrail#update_columns` was previously setting `Version#created_at` as the recod `updated_at` value. Since `update_columns` does not update timestamps - the...

- `PaperTrail::RecordTrail#update_columns` is setting `Version#created_at` as the `recod.updated_at` value. - since `update_columns` does not update timestamps - the previous update date is used for the `Version#created_at` instead of the actual...

- re-add sqlite to gemspec its' still needed to run tests without appraisal - update appraisal instructions in the readme the `rake appraise`tasks [has been removed a long time ago](https://github.com/mbleigh/acts-as-taggable-on/commit/830aabee46a9d40337b269425f368aeb17ffe06d#diff-52c976fc38ed2b4e3b1192f8a8e24cff)

invoking db:secondbase:migrate overwrites secondbase/schema with primary

6

Invoking `rake db:secondbase:migrate` or `rake db:secondbase:rollback` causes `secondbase/schema.rb` to be overwritten by primary database schema (in place of secondary). Invoking `rake db:migrate` after this fixes this and causes proper schema...