diff --git a/.github/wiki/api/functions/daysInHijriMonth.md b/.github/wiki/api/functions/daysInHijriMonth.md
index 8677ecd..312772c 100644
--- a/.github/wiki/api/functions/daysInHijriMonth.md
+++ b/.github/wiki/api/functions/daysInHijriMonth.md
@@ -8,7 +8,7 @@
 
 > **daysInHijriMonth**(`hy`, `hm`, `options?`): `number`
 
-Defined in: [index.ts:96](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/index.ts#L96)
+Defined in: [index.ts:96](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/index.ts#L96)
 
 Return the number of days in a given Hijri month.
 
diff --git a/.github/wiki/api/functions/getCalendar.md b/.github/wiki/api/functions/getCalendar.md
index 1b8198d..281cd02 100644
--- a/.github/wiki/api/functions/getCalendar.md
+++ b/.github/wiki/api/functions/getCalendar.md
@@ -8,7 +8,7 @@
 
 > **getCalendar**(`name`): [`CalendarEngine`](../interfaces/CalendarEngine.md)
 
-Defined in: [registry.ts:25](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/registry.ts#L25)
+Defined in: [registry.ts:25](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/registry.ts#L25)
 
 Retrieve a registered calendar engine by name.
 
diff --git a/.github/wiki/api/functions/isValidHijriDate.md b/.github/wiki/api/functions/isValidHijriDate.md
index bdb1b40..411fbea 100644
--- a/.github/wiki/api/functions/isValidHijriDate.md
+++ b/.github/wiki/api/functions/isValidHijriDate.md
@@ -8,7 +8,7 @@
 
 > **isValidHijriDate**(`hy`, `hm`, `hd`, `options?`): `boolean`
 
-Defined in: [index.ts:78](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/index.ts#L78)
+Defined in: [index.ts:78](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/index.ts#L78)
 
 Check whether a Hijri date is valid for the given calendar engine.
 
diff --git a/.github/wiki/api/functions/listCalendars.md b/.github/wiki/api/functions/listCalendars.md
index c515921..a4b6c60 100644
--- a/.github/wiki/api/functions/listCalendars.md
+++ b/.github/wiki/api/functions/listCalendars.md
@@ -8,7 +8,7 @@
 
 > **listCalendars**(): `string`[]
 
-Defined in: [registry.ts:41](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/registry.ts#L41)
+Defined in: [registry.ts:41](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/registry.ts#L41)
 
 List the names of all registered calendar engines.
 
diff --git a/.github/wiki/api/functions/registerCalendar.md b/.github/wiki/api/functions/registerCalendar.md
index 132111f..19601ff 100644
--- a/.github/wiki/api/functions/registerCalendar.md
+++ b/.github/wiki/api/functions/registerCalendar.md
@@ -8,7 +8,7 @@
 
 > **registerCalendar**(`name`, `engine`): `void`
 
-Defined in: [registry.ts:14](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/registry.ts#L14)
+Defined in: [registry.ts:14](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/registry.ts#L14)
 
 Register a calendar engine under the given name.
 
diff --git a/.github/wiki/api/functions/toGregorian.md b/.github/wiki/api/functions/toGregorian.md
index c302d1b..87ede01 100644
--- a/.github/wiki/api/functions/toGregorian.md
+++ b/.github/wiki/api/functions/toGregorian.md
@@ -8,7 +8,7 @@
 
 > **toGregorian**(`hy`, `hm`, `hd`, `options?`): `Date` \| `null`
 
-Defined in: [index.ts:60](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/index.ts#L60)
+Defined in: [index.ts:60](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/index.ts#L60)
 
 Convert a Hijri date to a Gregorian date.
 
diff --git a/.github/wiki/api/functions/toHijri.md b/.github/wiki/api/functions/toHijri.md
index 314be36..d5c950a 100644
--- a/.github/wiki/api/functions/toHijri.md
+++ b/.github/wiki/api/functions/toHijri.md
@@ -8,7 +8,7 @@
 
 > **toHijri**(`date`, `options?`): [`HijriDate`](../interfaces/HijriDate.md) \| `null`
 
-Defined in: [index.ts:42](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/index.ts#L42)
+Defined in: [index.ts:42](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/index.ts#L42)
 
 Convert a Gregorian date to a Hijri date.
 
diff --git a/.github/wiki/api/interfaces/CalendarEngine.md b/.github/wiki/api/interfaces/CalendarEngine.md
index af7dda7..f01278a 100644
--- a/.github/wiki/api/interfaces/CalendarEngine.md
+++ b/.github/wiki/api/interfaces/CalendarEngine.md
@@ -6,7 +6,7 @@
 
 # Interface: CalendarEngine
 
-Defined in: [types.ts:42](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L42)
+Defined in: [types.ts:42](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L42)
 
 Interface every calendar engine must implement.
 
@@ -21,7 +21,7 @@ the boundary gracefully without try/catch.
 
 > `readonly` **id**: `string`
 
-Defined in: [types.ts:43](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L43)
+Defined in: [types.ts:43](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L43)
 
 ## Methods
 
@@ -29,7 +29,7 @@ Defined in: [types.ts:43](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **daysInMonth**(`hy`, `hm`): `number`
 
-Defined in: [types.ts:48](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L48)
+Defined in: [types.ts:48](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L48)
 
 #### Parameters
 
@@ -51,7 +51,7 @@ Defined in: [types.ts:48](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **isValid**(`hy`, `hm`, `hd`): `boolean`
 
-Defined in: [types.ts:47](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L47)
+Defined in: [types.ts:47](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L47)
 
 #### Parameters
 
@@ -77,7 +77,7 @@ Defined in: [types.ts:47](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **toGregorian**(`hy`, `hm`, `hd`): `Date` \| `null`
 
-Defined in: [types.ts:46](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L46)
+Defined in: [types.ts:46](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L46)
 
 Returns null for invalid or out-of-range input. Never throws.
 
@@ -105,7 +105,7 @@ Returns null for invalid or out-of-range input. Never throws.
 
 > **toHijri**(`date`): [`HijriDate`](HijriDate.md) \| `null`
 
-Defined in: [types.ts:44](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L44)
+Defined in: [types.ts:44](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L44)
 
 #### Parameters
 
diff --git a/.github/wiki/api/interfaces/ConversionOptions.md b/.github/wiki/api/interfaces/ConversionOptions.md
index 206c6be..ec0634f 100644
--- a/.github/wiki/api/interfaces/ConversionOptions.md
+++ b/.github/wiki/api/interfaces/ConversionOptions.md
@@ -6,7 +6,7 @@
 
 # Interface: ConversionOptions
 
-Defined in: [types.ts:57](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L57)
+Defined in: [types.ts:57](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L57)
 
 Options accepted by the convenience conversion functions.
 
@@ -19,4 +19,4 @@ Pass any name previously given to [registerCalendar](../functions/registerCalend
 
 > `optional` **calendar?**: `string`
 
-Defined in: [types.ts:58](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L58)
+Defined in: [types.ts:58](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L58)
diff --git a/.github/wiki/api/interfaces/HijriDate.md b/.github/wiki/api/interfaces/HijriDate.md
index 865bcc0..0975d79 100644
--- a/.github/wiki/api/interfaces/HijriDate.md
+++ b/.github/wiki/api/interfaces/HijriDate.md
@@ -6,7 +6,7 @@
 
 # Interface: HijriDate
 
-Defined in: [types.ts:10](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L10)
+Defined in: [types.ts:10](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L10)
 
 A Hijri date triple.
 
@@ -25,7 +25,7 @@ const d: HijriDate = { hy: 1446, hm: 9, hd: 1 }; // 1 Ramadan 1446 AH
 
 > **hd**: `number`
 
-Defined in: [types.ts:13](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L13)
+Defined in: [types.ts:13](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L13)
 
 ***
 
@@ -33,7 +33,7 @@ Defined in: [types.ts:13](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **hm**: `number`
 
-Defined in: [types.ts:12](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L12)
+Defined in: [types.ts:12](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L12)
 
 ***
 
@@ -41,4 +41,4 @@ Defined in: [types.ts:12](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **hy**: `number`
 
-Defined in: [types.ts:11](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L11)
+Defined in: [types.ts:11](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L11)
diff --git a/.github/wiki/api/interfaces/HijriYearRecord.md b/.github/wiki/api/interfaces/HijriYearRecord.md
index 087730a..a52c313 100644
--- a/.github/wiki/api/interfaces/HijriYearRecord.md
+++ b/.github/wiki/api/interfaces/HijriYearRecord.md
@@ -6,7 +6,7 @@
 
 # Interface: HijriYearRecord
 
-Defined in: [types.ts:26](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L26)
+Defined in: [types.ts:26](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L26)
 
 One row in the Umm al-Qura reference table.
 
@@ -23,7 +23,7 @@ bit i (0-indexed from bit 0) = month i+1; 1 = 30 days, 0 = 29 days.
 
 > **dpm**: `number`
 
-Defined in: [types.ts:28](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L28)
+Defined in: [types.ts:28](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L28)
 
 ***
 
@@ -31,7 +31,7 @@ Defined in: [types.ts:28](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **gd**: `number`
 
-Defined in: [types.ts:31](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L31)
+Defined in: [types.ts:31](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L31)
 
 ***
 
@@ -39,7 +39,7 @@ Defined in: [types.ts:31](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **gm**: `number`
 
-Defined in: [types.ts:30](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L30)
+Defined in: [types.ts:30](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L30)
 
 ***
 
@@ -47,7 +47,7 @@ Defined in: [types.ts:30](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **gy**: `number`
 
-Defined in: [types.ts:29](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L29)
+Defined in: [types.ts:29](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L29)
 
 ***
 
@@ -55,4 +55,4 @@ Defined in: [types.ts:29](https://github.com/acamarata/hijri-core/blob/94bc28ebc
 
 > **hy**: `number`
 
-Defined in: [types.ts:27](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/types.ts#L27)
+Defined in: [types.ts:27](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/types.ts#L27)
diff --git a/.github/wiki/api/variables/MONTHS_PER_YEAR.md b/.github/wiki/api/variables/MONTHS_PER_YEAR.md
index 4d7021f..f3eb2aa 100644
--- a/.github/wiki/api/variables/MONTHS_PER_YEAR.md
+++ b/.github/wiki/api/variables/MONTHS_PER_YEAR.md
@@ -8,7 +8,7 @@
 
 > `const` **MONTHS\_PER\_YEAR**: `12` = `12`
 
-Defined in: [constants.ts:16](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/constants.ts#L16)
+Defined in: [constants.ts:16](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/constants.ts#L16)
 
 Number of months in a Hijri year.
 
diff --git a/.github/wiki/api/variables/MS_PER_DAY.md b/.github/wiki/api/variables/MS_PER_DAY.md
index 3368f4f..e82bf0b 100644
--- a/.github/wiki/api/variables/MS_PER_DAY.md
+++ b/.github/wiki/api/variables/MS_PER_DAY.md
@@ -8,7 +8,7 @@
 
 > `const` **MS\_PER\_DAY**: `86400000` = `86_400_000`
 
-Defined in: [constants.ts:8](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/constants.ts#L8)
+Defined in: [constants.ts:8](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/constants.ts#L8)
 
 Milliseconds in one day (24 * 60 * 60 * 1000).
 
diff --git a/.github/wiki/api/variables/hDatesTable.md b/.github/wiki/api/variables/hDatesTable.md
index 3a57794..51e07a4 100644
--- a/.github/wiki/api/variables/hDatesTable.md
+++ b/.github/wiki/api/variables/hDatesTable.md
@@ -8,4 +8,4 @@
 
 > `const` **hDatesTable**: [`HijriYearRecord`](../interfaces/HijriYearRecord.md)[]
 
-Defined in: [data/hDates.ts:7](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/data/hDates.ts#L7)
+Defined in: [data/hDates.ts:7](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/data/hDates.ts#L7)
diff --git a/.github/wiki/api/variables/hmLong.md b/.github/wiki/api/variables/hmLong.md
index cb0433f..279e04b 100644
--- a/.github/wiki/api/variables/hmLong.md
+++ b/.github/wiki/api/variables/hmLong.md
@@ -8,7 +8,7 @@
 
 > `const` **hmLong**: `string`[]
 
-Defined in: [names/months.ts:13](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/names/months.ts#L13)
+Defined in: [names/months.ts:13](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/names/months.ts#L13)
 
 Full English transliterations of the 12 Hijri month names.
 
diff --git a/.github/wiki/api/variables/hmMedium.md b/.github/wiki/api/variables/hmMedium.md
index cada3e6..5ffc497 100644
--- a/.github/wiki/api/variables/hmMedium.md
+++ b/.github/wiki/api/variables/hmMedium.md
@@ -8,7 +8,7 @@
 
 > `const` **hmMedium**: `string`[]
 
-Defined in: [names/months.ts:37](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/names/months.ts#L37)
+Defined in: [names/months.ts:37](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/names/months.ts#L37)
 
 Medium-length transliterations of the 12 Hijri month names.
 
diff --git a/.github/wiki/api/variables/hmShort.md b/.github/wiki/api/variables/hmShort.md
index 6fec24d..594b5fd 100644
--- a/.github/wiki/api/variables/hmShort.md
+++ b/.github/wiki/api/variables/hmShort.md
@@ -8,7 +8,7 @@
 
 > `const` **hmShort**: `string`[]
 
-Defined in: [names/months.ts:61](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/names/months.ts#L61)
+Defined in: [names/months.ts:61](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/names/months.ts#L61)
 
 Three-character short codes for the 12 Hijri months.
 
diff --git a/.github/wiki/api/variables/hwLong.md b/.github/wiki/api/variables/hwLong.md
index 367ba94..b2d6e3d 100644
--- a/.github/wiki/api/variables/hwLong.md
+++ b/.github/wiki/api/variables/hwLong.md
@@ -8,7 +8,7 @@
 
 > `const` **hwLong**: `string`[]
 
-Defined in: [names/weekdays.ts:13](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/names/weekdays.ts#L13)
+Defined in: [names/weekdays.ts:13](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/names/weekdays.ts#L13)
 
 Full Arabic-transliterated names for the seven days of the week.
 
diff --git a/.github/wiki/api/variables/hwNumeric.md b/.github/wiki/api/variables/hwNumeric.md
index 010a074..ee6831c 100644
--- a/.github/wiki/api/variables/hwNumeric.md
+++ b/.github/wiki/api/variables/hwNumeric.md
@@ -8,7 +8,7 @@
 
 > `const` **hwNumeric**: `number`[]
 
-Defined in: [names/weekdays.ts:50](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/names/weekdays.ts#L50)
+Defined in: [names/weekdays.ts:50](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/names/weekdays.ts#L50)
 
 Numeric weekday values: 1 = Sunday through 7 = Saturday.
 
diff --git a/.github/wiki/api/variables/hwShort.md b/.github/wiki/api/variables/hwShort.md
index 231bdb7..77058d4 100644
--- a/.github/wiki/api/variables/hwShort.md
+++ b/.github/wiki/api/variables/hwShort.md
@@ -8,7 +8,7 @@
 
 > `const` **hwShort**: `string`[]
 
-Defined in: [names/weekdays.ts:32](https://github.com/acamarata/hijri-core/blob/94bc28ebc35ae2f3cb39db5be34561152a5b899d/src/names/weekdays.ts#L32)
+Defined in: [names/weekdays.ts:32](https://github.com/acamarata/hijri-core/blob/235ffb8851dac2e67cab33f1fc76cd8c00bbbe7c/src/names/weekdays.ts#L32)
 
 Short single-word transliterations for the seven days of the week.