Large number of errors from new version format checking

Coming in 8.9, Racket now checks that package versions conform to valid-version?. This was added by @Bogdanp in https://github.com/racket/racket/pull/4588.

The current status is that this flags an error in the 56 packages listed below. This is fewer than it was before, thanks to the extensive set of PRs that @Bogdanp filed (you can see them linked from the original pull request). That seems like a lot. A high percentage of them are versions of the form N.N.0, which is not allowed. I wonder if relaxing the rules slightly here would be beneficial.

• alexis-collections
• alexis-multicast
• alexis-pvector
• alexis-util
• asi64
• aspell
• casemate
• chez-runner
• cover-coveralls
• csrmesh
• date
• DrRacketTheme
• fixw
• forge
• gg
• heresy
• http11
• http11-server
• interactive-brokers-api
• irc-client
• jen-doc
• jen-lib
• jen-samples
• lambda-calculus
• list-util
• logger
• memo
• nvim-client
• openweather
• opt
• pie
• pie-a-let-mode
• pl
• power-struct
• qtops
• racket-cord
• racketui
• raco-exe-multitarget
• RifL
• rktfetch
• semver
• spipe
• ssh-hack
• string-util
• struct-persist
• tabular-asa
• tinybasic-doc
• tinybasic-examples
• tinybasic-lib
• tjson
• todo-txt
• try
• uri
• vector-struct
• web-galaxy-lib
• word

Start by reading the version-checking change in pull request 4588 and the linked package reports, especially the entries using N.N.0 versions. Compare those cases with the behavior of valid-version? and determine whether the rules should change. Done means reaching a decision on the proposed relaxation and covering the resulting behavior for the affected package set.