Layout tweak for decay ID code alignment in SLHA output. Tagging as version 2.1.1 pyslha-2.1.1

Treat consecutive strings as a single value in SLHA entry parsing.

Improvements/fixes to repr vs. str and tuple-value output formatting.

Added tag pyslha-2.1.0 for changeset 6a98d8cfab70

Final tweaks and all tests passing... ready for 2.1.0 pyslha-2.1.0

Fix ambiguity between formatting a repr of a tuple and the tuple being an incompletely converted substitution list

File ignoring tweaks

Another test tweak

Test update: need to tweak output to make Anders' spectrum file work and note TODOs for 2.1.0

Adding Anders' example SLHA file

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