Prerelease Version 0.6.0-rc1

aa54c1c further small improvements to numerical stability
1d369c0 add additional warp test
f95afbc fix several small indexing bugs
4e30b51 fix edge case bug with small negative coefficients in tmat
69d8c7f fix hdf writer bug and add test for same
85654bf minor output fixes
8c69279 finalize major rework - new matrix assembly routines
282f766 Merge pull request #49 from INSIGNEO/pfire_next
3a4ac4a basis free rework
5c3520f refactor docs, add doxygen via breathe
4a0e090 improve testsuite and docs
20f71e2 improve help formatting
eb5e572 add algorithm documentation
f4ac8c9 Merge pull request #41 from INSIGNEO/develop
45201e4 complete testsuite framework
b7c0202 add html report generation
536773e begin modifying class structure to make full testsuite
6dc55c9 Merge pull request #40 from INSIGNEO/develop
7dad1b5 further output improvements
c767628 Merge pull request #39 from INSIGNEO/develop
822cc23 improve output error handling
e355ca2 Merge pull request #38 from INSIGNEO/develop
74b5b52 try to clean up exceptions more neatly
ee7c7c5 switch to CHKERRXX globally
c64b258 improve exception handling
88a5fb9 remove duplication of configuration arguments