Merge pull request nschloe#1188 from nschloe/3.10

3.10

Merge pull request nschloe#1186 from nschloe/error

better error message

Merge pull request nschloe#1167 from nschloe/version-bump

version bump, changelog

Merge pull request nschloe#1121 from nschloe/better-vtk

better vtk

Merge pull request nschloe#1112 from nschloe/fix-tarball

Fix tarball

Merge pull request nschloe#1110 from nschloe/version-bump

version bump

Merge pull request nschloe#1099 from Spectre5/nastran-long-support

Nastran long support

Merge pull request nschloe#1096 from nschloe/poly-fix

poly fix

Merge pull request nschloe#1094 from nschloe/include-tests

Include tests in distribution

Merge pull request nschloe#1089 from nschloe/more-poly-fixes

More poly fixes