Pin cmake version

v2.2.6

Pin cmake version

Pin build to conan 1

• Pin build to conan 1
• avoid using np.complex since it is deprecated

Conan-center sunset

Merge pull request #41 from astro-informatics/issues/39

Conan center remote

Conan-center packaging

Moves C++ packaging from bintray to conan-center and updates build system accordingly.

Python bug fixes

• Compiles pys2let with oldest possible numpy. Makes it compatible with newer numpys.

v2.2.1: Shield url and images (#34)

• Shield URLs in README and docs
• issue with CMake python builds on macos