Now Acedia collections provide functionality of `Get...ByPointer()`
method (that allows to fetch values nested into several collection by
JSON pointers) for both `JSONPointer` and `Text` classes.
Previously, each use of `Get...ByPointer()` method caused convertion of
a `Text` into `JSONPointer`, even if used `Text` value did not change.
This patch allows to create `JSONPointer` once and them use that as a
parameter, which should be much faster.
This is a giga commit, something that should not really be done with
git, but I messed up.
This commit brings a great amount of changes, most important is
reworking `TextAPI` and alsmost complete replacement of `string` with
`Text`/`MutableText`.
Another huge change is introduction of command system that allows to
define commands in a centralized manner, handles auto-parsing of
their parameters and auto generates help info.
Lastly, JSON data types were replaced with new
`DynamicArray`/`AssociativeArray` that are better designed and more
generic.
Anton Tarasenko