Neutronics-material-maker

What's Changed
* Mkaing coolprops optional by shimwell in https://github.com/fusion-energy/neutronics_material_maker/pull/16
* updated install and optional coolprops for python3.9 support by shimwell in https://github.com/fusion-energy/neutronics_material_maker/pull/17


**Full Changelog**: https://github.com/fusion-energy/neutronics_material_maker/compare/v1.0.3...v1.1.0

What's Changed
* separate install section by shimwell in https://github.com/fusion-energy/neutronics_material_maker/pull/9
* replaced autopep8 by shimwell in https://github.com/fusion-energy/neutronics_material_maker/pull/10
* Update to readme for openmc, mcnp, serpent2 and fispact property by RossWorrall in https://github.com/fusion-energy/neutronics_material_maker/pull/11
* Imporoved documentation by shimwell in https://github.com/fusion-energy/neutronics_material_maker/pull/12
* added scintillator material to database by shimwell in https://github.com/fusion-energy/neutronics_material_maker/pull/13
* Added scintillator materials by shimwell in https://github.com/fusion-energy/neutronics_material_maker/pull/14

New Contributors
* RossWorrall made their first contribution in https://github.com/fusion-energy/neutronics_material_maker/pull/11

**Full Changelog**: https://github.com/fusion-energy/neutronics_material_maker/compare/v1.0.2...v1.0.3

Added additional insulator material

Now user error messages come with suggested valid names when the Material.from_library name is not recognised