Fix 'case' indentation
Test: string continuations don't always work
Add tests and clean up test comments
Rewrite indentation to use a stack

Fixes #1. Anonymous functions and the "when" guards are now handled properly.
Add syntax file
Add "syncing" to the syntax script

This seems to make multiline strings recognized even a few hundred lines after
the cursor.
Add clarification about error handling to README
Handle "if" expressions
Add tests
Handle multiline atoms
test.erl: reorder two functions
Refactor and explain handling syntax error
Add tests from Reference Manual
Handle function clauses
Indentkeys work only when white space precedes them
Add tests for type specs