bump version number to 2.24.1

bump version number to 2.24.0

bump version number to 2.23.1

bump version number to 2.23.0

This ssocr release adds new features and thus addresses
GitHub issue #21:

* new option -N, --min-segment=SIZE
* new option -M, --min-char-dims=WxH
* a range of expected digits can be specified (before, only
  a single number could be specified, or the number could be
  left unspecified)

bump version number to 2.22.2

This "bug fix" release comprises documentation improvements only.

bump version number to 2.22.1

bump version number to 2.22.0 and make release

add ability to detect and print white space

This adds an option to enable white spece detection, and two
further options to control the operation of white space detection.

White space detection (--print-spaces) is intended for use cases
where digit (resp. character) grouping is important for correct
interpretation.  One use case is the recognition of superimposed
dates in photographic images.

This commit also increases the version number to 2.21.0 and tweaks
some debug output.

show default values for decimal separator ratios

bump version number to 2.19.0 (rlease is planned)