updating DIRECTORY.md

Author: cclauss

DIRECTORY.md

@@ -695,6 +695,7 @@
   * Forecasting
     * [Run](machine_learning/forecasting/run.py)
   * [Frequent Pattern Growth](machine_learning/frequent_pattern_growth.py)
+  * [Gaussian Mixture Model](machine_learning/gaussian_mixture_model.py)
   * [Gaussian Naive Bayes](machine_learning/gaussian_naive_bayes.py)
   * [Gradient Boosting Classifier](machine_learning/gradient_boosting_classifier.py)
   * [Gradient Boosting Regressor](machine_learning/gradient_boosting_regressor.py)
@@ -742,6 +743,7 @@
   * [Bailey Borwein Plouffe](maths/bailey_borwein_plouffe.py)
   * [Base Neg2 Conversion](maths/base_neg2_conversion.py)
   * [Basic Maths](maths/basic_maths.py)
+  * [Bearing](maths/bearing.py)
   * [Binary Exponentiation](maths/binary_exponentiation.py)
   * [Binary Multiplication](maths/binary_multiplication.py)
   * [Binomial Coefficient](maths/binomial_coefficient.py)
@@ -878,6 +880,7 @@
     * [Hexagonal Numbers](maths/series/hexagonal_numbers.py)
     * [Logarithmic Series](maths/series/logarithmic_series.py)
     * [P Series](maths/series/p_series.py)
+  * [Shoelace Area](maths/shoelace_area.py)
   * [Sieve Of Atkin](maths/sieve_of_atkin.py)
   * [Sieve Of Eratosthenes](maths/sieve_of_eratosthenes.py)
   * [Sigmoid](maths/sigmoid.py)
@@ -909,6 +912,7 @@
     * [Pronic Number](maths/special_numbers/pronic_number.py)
     * [Proth Number](maths/special_numbers/proth_number.py)
     * [Triangular Numbers](maths/special_numbers/triangular_numbers.py)
+    * [Trimorphic Number](maths/special_numbers/trimorphic_number.py)
     * [Ugly Numbers](maths/special_numbers/ugly_numbers.py)
     * [Weird Number](maths/special_numbers/weird_number.py)
   * [Sum Of Arithmetic Series](maths/sum_of_arithmetic_series.py)