sound-change-applier-v2.0

New features:

• rules such as [aou]e -> [äöü] / _ are now possible;
• --no-sound-classes option;
• default sound classes (if none are provided);
• rules can use > and => as arrows, in addition to ->;
• negative lookahead (_!) and lookbehind (!_).

Changes:

• sound-classes-file is now optional (renamed to --sound-classes-json);
• changed words printed by --named-sound-change are now separated with spaces instead of newlines;
• spaces (or their absence) around ->, =>, >, and / are now insignificant.

sound-change-applier-v1.0

Initial release of the sound change applier.