* fixes#967
* Version bump to 0.9.1
- Bugfixes for spack find
- 0.9.1 can read specs from current develop.
* Don't assume spack is in the path when building docs.
* adding mfem variants; do not assume build defaults
* adjusting format to clarify options
* fixing some build issues
* fixing mfem+sundials
* removing mesquite variant...turns out it is obsolete
* adding examples to mfem; fixing sundials darwin installs
* adding some additional variants and setting some configure flags by fiat
* switching most check_variants logic to conflicts() directives
* adding comment about cmake config
* fixing flake8 issues; thought I had already done that
* moving func def into install method
* switch yes_no to no_yes; fix miss-spelling of miniapps
* switching make target all to lib
* changing yes_no to function as requested; fix problem with same in sundials
* fix missing import sys directive
* adding master and develop versions to amrex
