spiral /
components
| C | ↘ | D | AbstractColumn got worse |
| ⇢ | C | AbstractColumn::normalizeDatetime() added | |
| D | ↗ | C | AbstractColumn::getDefaultValue() improved |
| A | ↛ | MySQLColumn::prepareDefault() removed | |
| A | ↛ | MySQLColumn::getDefaultValue() removed |
