Merge tag '0.4.3' into develop

smallfix

* tag '0.4.3':
  bumps to 0.4.3
minor refactor
forgot .version file in previous bump
usage before examples
replaces meta with build
updates regex to for latest BNF semver definition

- remove leading zeroes
- supports for dot delimited identifier in prerel and build
bumps to 1.0.0
Merge branch 'release/1.0.0'

* release/1.0.0:
  bumps to 1.0.0
  updates regex to for latest BNF semver definition
  replaces meta with build
  usage before examples
  forgot .version file in previous bump
  minor refactor