CI now builds in windows too

* made Abseil & Boost optional
* minor warning fixes in svector
* Updated unit tests so it compiles with strict warnings
* Bump version to 1.0.3

Push version to 1.0.2 for fixing a bug found by fuzzer

fix #42: Using delete operator for the memory allocated with placemen…

…t new

Also bump version to 1.0.1 for that fix

Enable resize for move-only types