Release 1.53.0.

New Libraries: Atomic, Coroutine, Lockfree, Multiprecision, Odeint.

Updated Libraries: Algorithm, Array, Asio, Bimap, Chrono, Container,
Context, Geometry, GIL, Graph, Hash, Interprocess, Intrusive, Lexical
Cast, Locale, Math, MinMax, Move, Polygon, Random, Range, Ratio, Regex,
Smart Pointers, StringAlgo, Thread, Utility, Unordered, Variant, Wave
and xpressive.
Release 1.54.0.

Changes to supported CPUs.

New Libraries: Log, TTI, Type Erasure.

Updated Libraries: Accumulators, Algorithm, Any, Asio, Chrono, Circular
Buffer, Container, Context, Coroutine, Geometry, Graph, Interprocess,
Intrusive, Iostreams, Lexical Cast, Math, Meta State Machine, Move,
Multiprecision, Polygon, Property Map, Range, Thread, Type Traits,
uBLAS, Unordered, Utility, Variant, Wave, xpressive.

Deprecated Library: Signals.