fix: retract v11.0.1, gate init nil pointers (#318)* fix: retract v11.0.1, gate init nil pointersas it would automatically initialize nil pointers.this retracts that version, and gate this new feature behind an `init`tag option.closes#317refs#306* test: make sure#310 is covered toocloses#310* test: add test for multiple tag optionsSigned-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>* fix: typo* perf: cheap firstSigned-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>---------Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>