remove -dev tag from version
update documentation links to point to latest, not develop
handle help for non-existing commands more gracefully

- catch KeyError from dict lookup and output an error message
  indicating that the command does not exist.
ensure cli help output is consistent

- options_metavars='[options]'
- ensure each option metavar is lowercase and more clearly
  expresses the argument type.
- add missing help descriptions for frmdump options
rename sieve --force to --to-stdout
add --table-schema / --no-table-schema options

- allows for excluding table schema from output.
fix long line reported by flake8
cleanup documentation
update HISTORY.rst for 2.0.0 release
add minor example to sieve --help output.
expand frmdump char_varchar_test with indexes

- partial index on varchar column (with comment)
- unique index on char column with algorithm and comment
add test + fix for frmdump fulltext parser plugins

- Ensure that WITH <parser name> is output as expected, using
  a simple example from the mysql documentation.