Merge pull request clap-rs#1045 from kbknapp/issues-1043,1044

Issues 1043,1044

chore: increase version

chore: increase version

chore: increase version

Auto merge of clap-rs#907 - kbknapp:v2.21.2, r=kbknapp

chore: increase version

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Auto merge of clap-rs#898 - kbknapp:issues-896,895, r=kbknapp

Issues 896,895

Call this PR "Raid" cause it's squashin bugs! (clap-rs#843)

* tests: adds tests for default values triggering conditional requirements

* fix: fixes a bug where default values should have triggered a conditional requirement but didnt

Closes clap-rs#831

* tests: adds tests for missing conditional requirements in usage string of errors

* fix: fixes a bug where conditionally required args werent appearing in errors

* tests: adds tests for completion generators

* tests: adds tests for completions with binaries names that have underscores

* fix: fixes a bug where ZSH completions would panic if the binary name had an underscore in it

Closes clap-rs#581

* fix: fixes bash completions for commands that have an underscore in the name

Closes clap-rs#581

* chore: fix the category for crates.io

* docs(Macros): adds a warning about changing values in Cargo.toml not triggering a rebuild automatically

Closes clap-rs#838

* fix(Completions): fixes a bug where global args weren't included in the generated completion scripts

Closes clap-rs#841

* fix: fixes a println->debugln typo

* chore: increase version

Auto merge of clap-rs#809 - kbknapp:issue-636, r=kbknapp

Issue 636

Auto merge of clap-rs#772 - kbknapp:issue-771, r=kbknapp

Issue 771

Auto merge of clap-rs#762 - kbknapp:issue-threedots, r=kbknapp

Issue threedots