Corrent info about ctx.tParam, fix some info

Добавил информацию о `ctx.tParam` (он может и получать значение)
Поправил оформление `ctx.position(), ctx.isFirst(), ctx.isLast()`.
Merge pull request #101 from alexbaumgertner/master

Corrent info about ctx.tParam, fix some info
Remove unused ``newCtx``.
Merge pull request #103 from YetiOr/yeti-or.remove-newCtx

Remove unused `newCtx`
Remove unreachable code.
Merge pull request #104 from YetiOr/yeti-or.remove.unreacheble

Remove unreachable code.
Escape content by default
Merge pull request #97 from bem/escape

Escape content when option `escapeContent` enabled
DevDependencies updated
v3.2.0
Changelog fix
Fix unit-tests.